1 00:00:00,240 --> 00:00:02,920 Speaker 1: Ron Ananian, you guys are dealing with real life and death. 2 00:00:03,080 --> 00:00:05,400 Speaker 1: The thing is, it's our lives that are involved to 3 00:00:05,640 --> 00:00:15,840 Speaker 1: not just the public that we serve. And there in air. Wait, 4 00:00:16,040 --> 00:00:22,400 Speaker 1: hoy the car Doctor. These cars are very, very dangerous 5 00:00:22,400 --> 00:00:24,720 Speaker 1: to prost responders if you don't know what you're doing, 6 00:00:25,120 --> 00:00:27,080 Speaker 1: if you don't know where to cut with the earth tool. 7 00:00:27,400 --> 00:00:30,319 Speaker 1: Some of the most dangerous things now are that with 8 00:00:30,400 --> 00:00:33,080 Speaker 1: electric cars, you don't know that they're on and running. 9 00:00:33,360 --> 00:00:36,240 Speaker 1: Welcome to the radio home of Ron and Nanian the 10 00:00:36,360 --> 00:00:40,760 Speaker 1: Car Doctor, since this is where car owners the world 11 00:00:40,800 --> 00:00:45,360 Speaker 1: overturned to for their definitive opinion on automotive repair. If 12 00:00:45,400 --> 00:00:48,120 Speaker 1: your mechanics giving you a busy signal, pick up the 13 00:00:48,159 --> 00:00:51,760 Speaker 1: phone and call in. The garage doors are open, but 14 00:00:51,840 --> 00:00:53,920 Speaker 1: I am here to take your call at eight five 15 00:00:54,040 --> 00:01:00,680 Speaker 1: five five six and now he running. It's time to 16 00:01:00,680 --> 00:01:02,800 Speaker 1: start your engines along and welcome on anting the Car 17 00:01:02,840 --> 00:01:05,920 Speaker 1: Doctor here at eight five five five zero nine zero zero, 18 00:01:06,080 --> 00:01:08,080 Speaker 1: here to take your calls and answer your questions as 19 00:01:08,080 --> 00:01:09,559 Speaker 1: we have done each and every week for the past 20 00:01:09,600 --> 00:01:12,039 Speaker 1: twenty seven some odd years, to talk to you about 21 00:01:12,080 --> 00:01:15,600 Speaker 1: your car problem. Eight five five five zero nine zero zero. 22 00:01:15,800 --> 00:01:18,280 Speaker 1: More information about this radio show. Car Doctor Show dot 23 00:01:18,280 --> 00:01:21,600 Speaker 1: com connections to the podcasting sources. If you're not in 24 00:01:21,640 --> 00:01:25,360 Speaker 1: your terrestrial radio doing traditional broadcast, you can podcast us 25 00:01:25,880 --> 00:01:28,000 Speaker 1: visa the Car Doctor Show dot com. It will direct 26 00:01:28,040 --> 00:01:31,120 Speaker 1: you over to spreaker speaker dot com and then obviously 27 00:01:31,160 --> 00:01:33,280 Speaker 1: we're out on iTunes and all the rest of the 28 00:01:33,280 --> 00:01:35,640 Speaker 1: places where you pick up podcasts from. So, if you're 29 00:01:35,640 --> 00:01:37,600 Speaker 1: new to this broadcast, thanks for stopping by. We know 30 00:01:37,640 --> 00:01:39,880 Speaker 1: you've got a lot of choices. This radio shows about 31 00:01:39,880 --> 00:01:42,640 Speaker 1: fixing your car, playing and simple, just what's going on. 32 00:01:42,680 --> 00:01:44,919 Speaker 1: I'm gonna share my forty three plus years of repairing 33 00:01:44,959 --> 00:01:47,280 Speaker 1: cars in the shops, still doing it each and every day, 34 00:01:47,600 --> 00:01:50,240 Speaker 1: and um, you know it's We're just a small two 35 00:01:50,280 --> 00:01:52,840 Speaker 1: man repair shop now that's still pumping out cars each 36 00:01:52,880 --> 00:01:55,400 Speaker 1: and every day. And I'm gonna tell you what's what's 37 00:01:55,400 --> 00:01:57,080 Speaker 1: going on. I can honestly say that, yeah, and it 38 00:01:57,200 --> 00:02:00,000 Speaker 1: still happens. Where I'll meet the I'll meet people in Paul. 39 00:02:00,040 --> 00:02:02,200 Speaker 1: Look in the first it's always weird. The first thing 40 00:02:02,560 --> 00:02:04,400 Speaker 1: the husbands do is they always shake my hand, and 41 00:02:04,360 --> 00:02:06,960 Speaker 1: they turned to their wife and go, yes, hands feel rough. 42 00:02:07,000 --> 00:02:08,560 Speaker 1: I guess he really does fix cars. Look at that. 43 00:02:08,600 --> 00:02:11,160 Speaker 1: He's not a limousine. He's not a limousine radio show 44 00:02:11,160 --> 00:02:14,880 Speaker 1: host like so many have come to be, which you know, 45 00:02:15,080 --> 00:02:17,040 Speaker 1: that's a that's a conversation for a whole another day. 46 00:02:17,040 --> 00:02:19,720 Speaker 1: That's what I've noticed. There's more and more car doctors 47 00:02:19,800 --> 00:02:22,280 Speaker 1: on radio now that um so, well, this is the 48 00:02:22,320 --> 00:02:24,560 Speaker 1: one and only, no phony, not a bunch of bologna. 49 00:02:24,600 --> 00:02:26,720 Speaker 1: Here we are and we're here to fix your car. 50 00:02:26,840 --> 00:02:28,959 Speaker 1: Let's go and talk to Danny in Maine oh six 51 00:02:29,040 --> 00:02:31,959 Speaker 1: Colorado with some questions about a P double RP one 52 00:02:32,240 --> 00:02:34,840 Speaker 1: P zero one seven one. Danny, Welcome to the car doctor, sir. 53 00:02:35,000 --> 00:02:38,520 Speaker 1: How can I help? Oh? Thank you? Wrong? And again 54 00:02:39,000 --> 00:02:45,400 Speaker 1: I heard your comments earlier, and uh you know, besides, uh, pastor, 55 00:02:45,840 --> 00:02:49,239 Speaker 1: you're probably the next person that my wives trust the moment. Well, 56 00:02:49,360 --> 00:02:52,080 Speaker 1: thank you, sir, I appreciate that. So what can I do? 57 00:02:52,080 --> 00:02:55,120 Speaker 1: What can I do for you? Danny? Well, quickly, uh 58 00:02:55,280 --> 00:02:57,640 Speaker 1: the cold P one zero seven one on a two 59 00:02:57,680 --> 00:03:02,119 Speaker 1: thousand six Colorado. Uh changed the mass Air Force sensor, 60 00:03:02,200 --> 00:03:07,760 Speaker 1: changed the upstream oh two upstream, I checked for the PCV. 61 00:03:08,280 --> 00:03:12,280 Speaker 1: I changed that little holes and e c uh well 62 00:03:12,400 --> 00:03:14,760 Speaker 1: what used to be called I mean my sixties year 63 00:03:14,800 --> 00:03:18,880 Speaker 1: cleaner every year, I should say, and um, and I 64 00:03:18,960 --> 00:03:22,560 Speaker 1: checked as much as I could for for vacuum weeks 65 00:03:22,720 --> 00:03:25,160 Speaker 1: and that didn't work. So I brought it to the 66 00:03:25,760 --> 00:03:30,160 Speaker 1: pair and specifically he said, if you know, it was 67 00:03:30,280 --> 00:03:32,200 Speaker 1: very polite. If it's too much for you guys, I'll 68 00:03:32,200 --> 00:03:33,800 Speaker 1: go to the dealer. And they said, no, no, no, 69 00:03:34,120 --> 00:03:36,960 Speaker 1: he says, we've got some high techn equipment and and 70 00:03:37,040 --> 00:03:39,280 Speaker 1: so forth. So they worked on it and they they 71 00:03:39,360 --> 00:03:42,600 Speaker 1: claimed it was a cold. They're coming in and supposed 72 00:03:42,600 --> 00:03:45,440 Speaker 1: to be a few vacuum weeks and three hundred dollars 73 00:03:45,520 --> 00:03:48,040 Speaker 1: later and he said to do trucks. Fine, so five 74 00:03:48,400 --> 00:03:50,520 Speaker 1: I'll keep my spend of five hours on the road. 75 00:03:51,280 --> 00:03:54,320 Speaker 1: The cod came up again and so I said, they said, well, 76 00:03:54,320 --> 00:03:57,120 Speaker 1: those were some problems. Uh, we took care of it, 77 00:03:57,160 --> 00:03:59,680 Speaker 1: but obviously there have a problems. So there's why I'm 78 00:03:59,760 --> 00:04:03,440 Speaker 1: called on you. A lot of ideas to have booked online, 79 00:04:03,480 --> 00:04:06,880 Speaker 1: and I'm out of ideas. So did I hear you 80 00:04:06,920 --> 00:04:10,000 Speaker 1: say that you have a scan tool? Danny? Yeah, Well 81 00:04:10,000 --> 00:04:11,960 Speaker 1: that's what I do. I keep it with. What happened 82 00:04:12,000 --> 00:04:16,160 Speaker 1: is that I kept it with me, and uh, I'm 83 00:04:16,200 --> 00:04:18,440 Speaker 1: always looking for a bargain. So if I see something 84 00:04:18,480 --> 00:04:20,479 Speaker 1: that used a vehicle, I keep it with me, and 85 00:04:20,520 --> 00:04:23,039 Speaker 1: it's just one of these things like my personal self. 86 00:04:23,120 --> 00:04:25,559 Speaker 1: And so that's why I was fortunate. When the COLDE 87 00:04:25,560 --> 00:04:28,800 Speaker 1: came on, I pulled over, and but I had had 88 00:04:28,800 --> 00:04:30,719 Speaker 1: a meeting to go to, so I couldn't bring it 89 00:04:30,760 --> 00:04:34,279 Speaker 1: back to the pair shops. But I did call it anyway. 90 00:04:35,360 --> 00:04:39,120 Speaker 1: So but I do have the scanner. Do you understand 91 00:04:39,240 --> 00:04:46,240 Speaker 1: fuel trim? Uh? Fifty fifty? And it did say a 92 00:04:46,360 --> 00:04:49,000 Speaker 1: colde lean bank one, you know which is I seemed 93 00:04:49,000 --> 00:04:53,000 Speaker 1: to be a typical cold So zero one seven one 94 00:04:53,040 --> 00:04:55,039 Speaker 1: is a lean fuel condition bank one on a V 95 00:04:55,160 --> 00:04:58,240 Speaker 1: six is the three point five V six? Correct? No, 96 00:04:58,480 --> 00:05:04,520 Speaker 1: three point five? I mean three three point five straight six? Okay, um, 97 00:05:04,560 --> 00:05:07,480 Speaker 1: But regardless, this is right. There's there's a three point 98 00:05:07,520 --> 00:05:13,080 Speaker 1: five though, correct that? Okay? So this is this, This 99 00:05:13,120 --> 00:05:16,880 Speaker 1: is a lean fuel condition that it's reporting as a 100 00:05:16,960 --> 00:05:21,440 Speaker 1: result of fuel trim being off its base fueling. Let's 101 00:05:21,440 --> 00:05:23,680 Speaker 1: talk about it in a minute. When I went to 102 00:05:23,760 --> 00:05:27,520 Speaker 1: high school, I remember taking algebra, and I remember the 103 00:05:27,600 --> 00:05:32,040 Speaker 1: day they introduced us to positive and negative integers, and 104 00:05:32,080 --> 00:05:34,719 Speaker 1: the teacher drew that line up on the blackboard with 105 00:05:34,880 --> 00:05:37,120 Speaker 1: zero in the middle, and then this is positive one, 106 00:05:37,200 --> 00:05:40,320 Speaker 1: positive too, positive three. That was right about where most 107 00:05:40,360 --> 00:05:42,839 Speaker 1: of us nodded off. And then they went and you 108 00:05:42,839 --> 00:05:44,640 Speaker 1: know then when they got to this is negative one, 109 00:05:44,720 --> 00:05:47,040 Speaker 1: negative two. I was snoring by then because I'm saying, 110 00:05:47,160 --> 00:05:50,680 Speaker 1: what am I gonna use this for? Well, twenty five 111 00:05:50,760 --> 00:05:53,960 Speaker 1: years later, GM decided our car companies decided to come 112 00:05:53,960 --> 00:05:57,360 Speaker 1: out with fuel trim, and now we use it all 113 00:05:57,400 --> 00:06:01,120 Speaker 1: the time because that that that line of numbers, here's 114 00:06:01,200 --> 00:06:05,960 Speaker 1: zero zero on a fuel trim measurement is a balanced 115 00:06:06,080 --> 00:06:09,120 Speaker 1: fuel mixture. It's the right amount of air, the right 116 00:06:09,160 --> 00:06:13,040 Speaker 1: amount of fuel under the right condition. All cars are 117 00:06:13,120 --> 00:06:18,560 Speaker 1: programmed with a base fuel number, and it's regardless of 118 00:06:18,560 --> 00:06:20,599 Speaker 1: what the number is. They all start with, you know, 119 00:06:20,680 --> 00:06:24,159 Speaker 1: depending upon the size of the engine, the design of 120 00:06:24,160 --> 00:06:28,880 Speaker 1: the vehicle, it's purpose, you know, horsepower, load, performance, application, speed, 121 00:06:28,880 --> 00:06:33,320 Speaker 1: et cetera. It all starts with a different base fueling number, 122 00:06:33,920 --> 00:06:36,400 Speaker 1: but it's all represented to us as mechanics in the 123 00:06:36,440 --> 00:06:40,800 Speaker 1: field as zero. So zero fuel trim means that car 124 00:06:40,880 --> 00:06:44,680 Speaker 1: is an emission compliance. It's in fuel compliance. It's it's 125 00:06:44,800 --> 00:06:49,400 Speaker 1: meeting its specification that the computer says, hey, under this condition. 126 00:06:49,720 --> 00:06:52,160 Speaker 1: You need to use this much of an air fuel mixture, 127 00:06:52,520 --> 00:06:56,080 Speaker 1: and it is. That's a good thing. If it picks 128 00:06:56,160 --> 00:06:59,799 Speaker 1: up an abnormality, it might add a little more. Fuel 129 00:07:00,000 --> 00:07:03,039 Speaker 1: should be represented by a positive number on that on 130 00:07:03,120 --> 00:07:06,440 Speaker 1: that number line, or it might be represented as a 131 00:07:06,480 --> 00:07:10,000 Speaker 1: negative number if it has to close down the injector 132 00:07:10,040 --> 00:07:12,440 Speaker 1: on time, if it has to shorten the injector on time, 133 00:07:12,680 --> 00:07:15,680 Speaker 1: take fuel away from the engine. Negative as a takeaway, 134 00:07:15,880 --> 00:07:19,640 Speaker 1: positive as a plus. It's adding fuel. All cars have 135 00:07:19,680 --> 00:07:24,200 Speaker 1: a window. If zero's in the middle, and that's balanced 136 00:07:24,240 --> 00:07:29,440 Speaker 1: air fuel mixture. The rule of thumb is short term 137 00:07:29,440 --> 00:07:32,000 Speaker 1: fuel trim, which is what's happening right now here today 138 00:07:32,040 --> 00:07:35,440 Speaker 1: this second, like you and I talking. That's current. Short 139 00:07:35,520 --> 00:07:39,120 Speaker 1: term fuel trim is plus or minus five six seven 140 00:07:39,200 --> 00:07:43,080 Speaker 1: percent on a steady basis. I've seen short term fuel trim. Heck, 141 00:07:43,120 --> 00:07:44,960 Speaker 1: I had a temper or not a temper on my 142 00:07:45,040 --> 00:07:47,640 Speaker 1: saying temper, my god, I'm dating myself. I had a 143 00:07:47,720 --> 00:07:51,120 Speaker 1: FOURD escaped yesterday before the carbon cleaning. That showed me 144 00:07:51,200 --> 00:07:54,840 Speaker 1: short term fuel trim numbers at idle anywhere from eight 145 00:07:55,000 --> 00:07:58,040 Speaker 1: to and then they would come back down again. It 146 00:07:58,080 --> 00:08:01,880 Speaker 1: wasn't a consistent basis. Long term fuel trim is ten 147 00:08:01,880 --> 00:08:03,760 Speaker 1: percent or less in my book, but it does depend 148 00:08:03,760 --> 00:08:08,600 Speaker 1: on the vehicle. The key is if you take short term, 149 00:08:08,600 --> 00:08:12,520 Speaker 1: which is current, long term, which is history, fuel trim, 150 00:08:12,760 --> 00:08:17,200 Speaker 1: add the two numbers together generally is the point at 151 00:08:17,240 --> 00:08:21,560 Speaker 1: which it will set a fault code most cars general terms. 152 00:08:21,600 --> 00:08:25,960 Speaker 1: So I always look at fuel trim on a vehicle 153 00:08:26,040 --> 00:08:29,840 Speaker 1: capable of displaying it, because how far over the line 154 00:08:29,840 --> 00:08:35,080 Speaker 1: am I? Is your Colorado gonna show me fuel trim? 155 00:08:35,120 --> 00:08:38,120 Speaker 1: Meaning it's just a little off past the is gonna 156 00:08:38,120 --> 00:08:42,120 Speaker 1: show me fuel trim? How big is this leak? And 157 00:08:42,160 --> 00:08:44,640 Speaker 1: then where is the one I can tell you? I 158 00:08:44,679 --> 00:08:49,120 Speaker 1: can tell you this is that I did the MPG 159 00:08:49,440 --> 00:08:54,360 Speaker 1: to make and it's it's now doing ten together? Doesn't 160 00:08:54,400 --> 00:08:56,559 Speaker 1: That doesn't mean anything to me because I'm out of 161 00:08:56,880 --> 00:08:59,240 Speaker 1: I'm out of I'm out of emissions. Comply and check engines, 162 00:08:59,320 --> 00:09:01,280 Speaker 1: light check in and lights on. I'm setting a code, 163 00:09:01,840 --> 00:09:05,760 Speaker 1: all right? So so where's fuel trim on this truck? 164 00:09:05,840 --> 00:09:09,200 Speaker 1: Have you looked at it? No? No, I'm having I'm 165 00:09:09,240 --> 00:09:12,160 Speaker 1: havn't gone that. Sorry, Okay, you're gonna see two numbers, 166 00:09:12,280 --> 00:09:14,040 Speaker 1: S t f T and l t f T Long 167 00:09:14,160 --> 00:09:16,640 Speaker 1: term fuel trim, short term fuel trim. Where is it? 168 00:09:17,840 --> 00:09:22,640 Speaker 1: If if you see short term fuel trim at idle 169 00:09:23,400 --> 00:09:26,079 Speaker 1: and it cleans up off idle going down the road 170 00:09:26,080 --> 00:09:28,440 Speaker 1: at thirty miles an hour, short term fuel trim drops 171 00:09:28,480 --> 00:09:31,200 Speaker 1: down into the four or five, six seven percent range 172 00:09:31,200 --> 00:09:34,400 Speaker 1: and stays there. Because I'm only worried about short term 173 00:09:34,400 --> 00:09:37,920 Speaker 1: at this point, because long term is driven by short term, 174 00:09:38,000 --> 00:09:40,600 Speaker 1: and I'm trying to make this simple. Believe me, short 175 00:09:40,679 --> 00:09:42,760 Speaker 1: term is driven I'm sorry, long term is driven by 176 00:09:42,760 --> 00:09:44,839 Speaker 1: short term. I'm gonna look at short term. That's my 177 00:09:45,240 --> 00:09:48,520 Speaker 1: that's my magic number. If I see a low short 178 00:09:48,640 --> 00:09:52,000 Speaker 1: term number driving down the road and a high short 179 00:09:52,120 --> 00:09:54,640 Speaker 1: term number sitting at idle, I've got a vacuum leak 180 00:09:54,640 --> 00:09:59,040 Speaker 1: at idle. If if if if I see a high 181 00:09:59,080 --> 00:10:03,160 Speaker 1: short term number ber driving down the road and that idol, 182 00:10:04,240 --> 00:10:08,680 Speaker 1: I've got a component likely driving that number. What you've 183 00:10:08,679 --> 00:10:13,120 Speaker 1: already gone through mass air flow um O two centsor 184 00:10:13,480 --> 00:10:17,120 Speaker 1: uh not to say that I can't have um a 185 00:10:17,280 --> 00:10:20,520 Speaker 1: massive air leak somewhere creating it, but you would probably 186 00:10:20,559 --> 00:10:24,640 Speaker 1: hear the rush of the air. So simply by looking 187 00:10:24,679 --> 00:10:27,719 Speaker 1: at a scan tool. Okay, where's the fuel trim out. 188 00:10:27,760 --> 00:10:29,200 Speaker 1: Is it out at idol? Is it out going down 189 00:10:29,200 --> 00:10:31,079 Speaker 1: the road? It's out at idle off idol it drops 190 00:10:31,120 --> 00:10:35,319 Speaker 1: from and you'll see it. It drops from down to 191 00:10:35,360 --> 00:10:37,960 Speaker 1: five percent. Guess what you've got a vacuum leak at idol? Brother? 192 00:10:38,840 --> 00:10:42,400 Speaker 1: All right, um, this is an example where we would 193 00:10:42,440 --> 00:10:44,480 Speaker 1: just use some pro pane sniff around. Bring the scan 194 00:10:44,559 --> 00:10:47,719 Speaker 1: tool up. Look at O B D two. Watch the 195 00:10:47,840 --> 00:10:50,800 Speaker 1: O two censor. Where's the O two going? Where's ful 196 00:10:50,800 --> 00:10:52,880 Speaker 1: trim going? The O two drives the O two? The 197 00:10:52,960 --> 00:10:55,719 Speaker 1: O two drives the fuel trim. Rather, I'm sorry, I 198 00:10:55,760 --> 00:10:58,280 Speaker 1: would pay attention to the O two censor and see 199 00:10:58,280 --> 00:11:01,320 Speaker 1: where that's at, all right, because one drives the other 200 00:11:02,280 --> 00:11:05,360 Speaker 1: and you know, kind of take it from there. The 201 00:11:05,360 --> 00:11:06,760 Speaker 1: other thing. I want you to get in the habit 202 00:11:06,800 --> 00:11:08,720 Speaker 1: of doing and I want you to do this, Danny. 203 00:11:08,920 --> 00:11:10,760 Speaker 1: You know where you look at fuel trim and idol 204 00:11:10,800 --> 00:11:12,040 Speaker 1: and cruising down the road. And if you have any 205 00:11:12,040 --> 00:11:14,280 Speaker 1: more questions you call me back. But I want you 206 00:11:14,320 --> 00:11:17,120 Speaker 1: to promise me something, all right, when you get this 207 00:11:17,200 --> 00:11:21,319 Speaker 1: truck fixed, I want you to look at fuel trim 208 00:11:21,400 --> 00:11:24,199 Speaker 1: on some of the cars you drive when they're good, 209 00:11:24,320 --> 00:11:27,040 Speaker 1: when they're working. One of the things I always tell 210 00:11:27,080 --> 00:11:30,160 Speaker 1: everybody is if you don't learn to know what known 211 00:11:30,280 --> 00:11:33,520 Speaker 1: good is, you won't know what broken is. And I'm 212 00:11:33,520 --> 00:11:36,920 Speaker 1: not asking you to memorize numbers. It's it's it's it's generalities. 213 00:11:36,920 --> 00:11:38,520 Speaker 1: I don't keep a lot of things in my head. Well, 214 00:11:38,679 --> 00:11:40,520 Speaker 1: I don't keep too much. I try to keep my 215 00:11:40,520 --> 00:11:42,439 Speaker 1: head empty as much as possible. It doesn't always work 216 00:11:42,480 --> 00:11:45,720 Speaker 1: like that, but the point becomes, I always try to 217 00:11:45,720 --> 00:11:48,280 Speaker 1: look at known good. If I've got fifteen minutes in 218 00:11:48,320 --> 00:11:50,600 Speaker 1: the shop, which does happen? I force it to happen. 219 00:11:50,840 --> 00:11:52,400 Speaker 1: I will look up a scan tool to a car 220 00:11:52,440 --> 00:11:54,040 Speaker 1: that I mean, yeah, I had one of those last week. 221 00:11:54,080 --> 00:11:55,760 Speaker 1: I didn't I didn't see non good. What does known 222 00:11:55,800 --> 00:11:57,719 Speaker 1: good look like until after I fixed it? I want 223 00:11:57,720 --> 00:11:59,280 Speaker 1: to see what it looks like now, and I'll do that. 224 00:11:59,480 --> 00:12:02,640 Speaker 1: So um so let's do that. Okay, let's go for 225 00:12:02,679 --> 00:12:05,240 Speaker 1: a ride. Puck up your scan tool. Which way is 226 00:12:05,280 --> 00:12:08,920 Speaker 1: short term fuel trim going high high it idle lower idle, 227 00:12:09,240 --> 00:12:10,959 Speaker 1: and go from there. Call me back if you need more. 228 00:12:10,960 --> 00:12:13,560 Speaker 1: But you've got a vacuum leak somewhere and they just 229 00:12:13,600 --> 00:12:17,080 Speaker 1: haven't picked it out yet. So one other questions do 230 00:12:17,120 --> 00:12:22,360 Speaker 1: you suppose and I bought the O two UM online 231 00:12:23,360 --> 00:12:26,040 Speaker 1: UM and many are shared this need could be defective? 232 00:12:27,040 --> 00:12:33,400 Speaker 1: Is a well well test test the O two okay 233 00:12:33,440 --> 00:12:37,000 Speaker 1: test test the O two UM. You know what? Disconnect 234 00:12:37,040 --> 00:12:39,280 Speaker 1: the two centsor find the input lead going to the 235 00:12:39,480 --> 00:12:41,840 Speaker 1: going to the back of the PCM. If you can 236 00:12:41,840 --> 00:12:44,720 Speaker 1: figure out which is the signal line and hold that 237 00:12:44,760 --> 00:12:47,839 Speaker 1: into that signal line in your one hand, wet your 238 00:12:47,840 --> 00:12:50,960 Speaker 1: index finger, touch the top of the battery on the 239 00:12:51,000 --> 00:12:53,400 Speaker 1: positive side. You'll drive the O two voltage one way. 240 00:12:53,640 --> 00:12:55,920 Speaker 1: Touch the negative side, you'll drive the two voltage the 241 00:12:55,920 --> 00:12:57,839 Speaker 1: other way. You'll see it on the scan tool. If 242 00:12:57,840 --> 00:13:00,360 Speaker 1: the circuit responds high low, we know the circuit to work. 243 00:13:00,360 --> 00:13:03,440 Speaker 1: And now plug in the O two watch and create 244 00:13:03,440 --> 00:13:05,480 Speaker 1: a create a bigger vacuum leak at idle Do you 245 00:13:05,559 --> 00:13:08,480 Speaker 1: drive the O two lean shut the O two down, 246 00:13:08,559 --> 00:13:10,640 Speaker 1: shut shut the air off coming into the engine D 247 00:13:10,760 --> 00:13:13,439 Speaker 1: created rich Can you can you drive it that way? 248 00:13:13,480 --> 00:13:15,960 Speaker 1: If you can, then the O two is working. Easiest 249 00:13:15,960 --> 00:13:19,760 Speaker 1: test for mass airflow. Easiest test for mass airflow is 250 00:13:19,800 --> 00:13:23,559 Speaker 1: bring up calculated load under O B D two and 251 00:13:23,840 --> 00:13:26,440 Speaker 1: from a twenty mile and our kick again. Learning to 252 00:13:26,480 --> 00:13:29,520 Speaker 1: know what good looks like twenty mile our kick. Put 253 00:13:29,559 --> 00:13:32,400 Speaker 1: your foot to the floor. You should see calculated load 254 00:13:32,480 --> 00:13:37,160 Speaker 1: values in theile range. If it only comes up on 255 00:13:37,240 --> 00:13:40,600 Speaker 1: a good vehicle, you've got a problem with that mass 256 00:13:40,640 --> 00:13:43,280 Speaker 1: air generally, but in this case, you got to fix 257 00:13:43,360 --> 00:13:45,600 Speaker 1: the air leak first. You gotta know where the year 258 00:13:45,679 --> 00:13:47,800 Speaker 1: leak is a carrying if it does have a vacuum leak, 259 00:13:48,040 --> 00:13:49,800 Speaker 1: and then go from there. Do what I told you. 260 00:13:49,960 --> 00:13:54,319 Speaker 1: Call me back zero zero. Car doctors running late. I'll 261 00:13:54,320 --> 00:14:06,080 Speaker 1: be back right after this. I've got no good time 262 00:14:08,880 --> 00:14:10,920 Speaker 1: right on the wall, so you don't forget to call 263 00:14:11,000 --> 00:14:14,079 Speaker 1: for car advice. Done right? Eight five five five six 264 00:14:14,200 --> 00:14:17,959 Speaker 1: zero nine nine zero zero. Now back to Ron. Hey, 265 00:14:18,080 --> 00:14:20,080 Speaker 1: let's get on over and talk to David in Connecticut. 266 00:14:20,120 --> 00:14:22,440 Speaker 1: Oh seven jeep. David, welcome to the car doctor, sir, 267 00:14:22,440 --> 00:14:26,240 Speaker 1: How can I help? It's Dan? Oh Dan, I'm sorry, 268 00:14:26,520 --> 00:14:29,360 Speaker 1: Tom wrote David. Look at that Tom made a boo boo. 269 00:14:29,760 --> 00:14:33,080 Speaker 1: So Daniel, how can I help you today? Daniel? Ron, 270 00:14:33,080 --> 00:14:36,040 Speaker 1: it's my daughter's card to two thousand seven jeep Compass. 271 00:14:36,400 --> 00:14:38,840 Speaker 1: She's not getting new front wipers to work on any 272 00:14:38,840 --> 00:14:45,200 Speaker 1: of the settings. Real wipers work. Any any diagnosis made, 273 00:14:45,240 --> 00:14:47,520 Speaker 1: any diagnostic attempts here, or we're just gonna take it 274 00:14:47,520 --> 00:14:50,520 Speaker 1: from scratch. No, I was trying to read up on it. 275 00:14:50,520 --> 00:14:52,800 Speaker 1: I was thinking about maybe replacing you know, the motor 276 00:14:52,800 --> 00:14:58,760 Speaker 1: in the linkage. But yeah, old school technology. Uh Dan, 277 00:14:58,880 --> 00:15:01,760 Speaker 1: that's that's that's the old school approach. This is a No. Seven. Gee, 278 00:15:01,960 --> 00:15:04,600 Speaker 1: there's more computer network in this car than the rocket 279 00:15:04,600 --> 00:15:08,000 Speaker 1: that went to the moon, and that that wiper circuit 280 00:15:08,600 --> 00:15:12,520 Speaker 1: is probably more advanced than half the circuits on half 281 00:15:12,520 --> 00:15:16,600 Speaker 1: the airplanes flying today. So it's like this. If you 282 00:15:16,760 --> 00:15:20,320 Speaker 1: have a compatible scan tool and here's a case where 283 00:15:20,320 --> 00:15:22,480 Speaker 1: O B D two won't work, you need something your 284 00:15:22,560 --> 00:15:26,760 Speaker 1: make model. My first step would be plug in retrieve 285 00:15:26,760 --> 00:15:29,800 Speaker 1: any codes in the vehicle. This is a case where 286 00:15:29,880 --> 00:15:35,120 Speaker 1: if there are communication faults network communications stuff, the wiper 287 00:15:35,160 --> 00:15:38,840 Speaker 1: switch won't get the information through to the wiper module 288 00:15:39,200 --> 00:15:42,480 Speaker 1: or won't get the information through to the gateway module 289 00:15:42,760 --> 00:15:46,080 Speaker 1: and turn on the wiper motor. So this could be 290 00:15:46,080 --> 00:15:49,600 Speaker 1: a communication fault, This could be a component fault. This 291 00:15:49,720 --> 00:15:53,480 Speaker 1: could be something as simple as disconnecting the two battery 292 00:15:53,520 --> 00:15:58,240 Speaker 1: cables because the tip of module or the gateway module 293 00:15:58,560 --> 00:16:02,920 Speaker 1: is locked up and it needs to be rebooted. And 294 00:16:03,080 --> 00:16:05,400 Speaker 1: any sort of scan tool in your in your diagnostic 295 00:16:05,640 --> 00:16:09,160 Speaker 1: routine or your your toolbox. There, no, no, I don't 296 00:16:09,200 --> 00:16:14,080 Speaker 1: have one. Okay, so you know you could literally let's 297 00:16:14,120 --> 00:16:16,520 Speaker 1: let's let's pretend right in in a in a in 298 00:16:16,560 --> 00:16:19,040 Speaker 1: a world where we've got a scan tool. We could 299 00:16:19,040 --> 00:16:23,000 Speaker 1: hook up a scan tool, go to the steering control module, 300 00:16:23,160 --> 00:16:25,160 Speaker 1: which is where we'll find the information for this car, 301 00:16:25,840 --> 00:16:28,920 Speaker 1: and look under wipers, and you could literally turn the 302 00:16:28,960 --> 00:16:32,240 Speaker 1: wiper switch, you know, low, medium, high, whatever the positions are, 303 00:16:32,640 --> 00:16:36,920 Speaker 1: and it will display correspondingly on the scan tool. Well, 304 00:16:37,000 --> 00:16:39,000 Speaker 1: we know the switch is good, we know the circuits good, 305 00:16:39,640 --> 00:16:44,160 Speaker 1: we know the input request for wiper is there. Eliminates 306 00:16:44,200 --> 00:16:47,400 Speaker 1: that switches aren't that common. I'm not saying it's impossible, 307 00:16:47,440 --> 00:16:50,480 Speaker 1: but they're not that common on these cars, all right. 308 00:16:51,520 --> 00:16:53,520 Speaker 1: The other thing a scan tool would do in this 309 00:16:53,560 --> 00:16:58,000 Speaker 1: case is you hear me talk about different modules on cars. 310 00:16:58,000 --> 00:16:59,920 Speaker 1: Do you ever think about all the computer modules on 311 00:17:00,200 --> 00:17:03,240 Speaker 1: all the different cars that are out there today? You 312 00:17:03,280 --> 00:17:04,840 Speaker 1: know there's a there's a ton of them, right, I 313 00:17:04,880 --> 00:17:09,840 Speaker 1: mean some cars have undred and ten modules, hundred and 314 00:17:09,840 --> 00:17:13,320 Speaker 1: ten computers. A scan tool has got to be able 315 00:17:13,359 --> 00:17:17,639 Speaker 1: to talk to all those modules. And if one comes 316 00:17:17,680 --> 00:17:22,240 Speaker 1: back as no communication, it's it's no different. Then do 317 00:17:22,280 --> 00:17:24,000 Speaker 1: you ever have a house with you know, more than 318 00:17:24,040 --> 00:17:26,040 Speaker 1: one telephone in it back in the day when phone 319 00:17:26,080 --> 00:17:29,919 Speaker 1: when when houses headphones? And and do you ever have 320 00:17:29,960 --> 00:17:31,760 Speaker 1: a problem where you had a bad phone and it 321 00:17:31,800 --> 00:17:33,600 Speaker 1: took out the entire network all of a sudden, none 322 00:17:33,600 --> 00:17:35,199 Speaker 1: of the phones worked, and the phone company told you 323 00:17:35,240 --> 00:17:38,560 Speaker 1: to start on plugging phones and then and then when 324 00:17:38,600 --> 00:17:40,920 Speaker 1: you did, the network came back up. Then the remaining 325 00:17:40,920 --> 00:17:44,359 Speaker 1: phones started working. We've all been through that, right. That 326 00:17:44,480 --> 00:17:48,600 Speaker 1: was the that was the precursor to automotive networking and computers. 327 00:17:49,640 --> 00:17:53,560 Speaker 1: And you know, we need a scan tool. We need 328 00:17:53,600 --> 00:17:56,919 Speaker 1: to be able to talk to the modules on the 329 00:17:57,000 --> 00:18:00,480 Speaker 1: circuit that we're trying to fix and then go from there. 330 00:18:01,359 --> 00:18:04,040 Speaker 1: The I don't have a scan tool solution. And I 331 00:18:04,119 --> 00:18:06,800 Speaker 1: hate to do this because you're gonna lose information, but 332 00:18:06,880 --> 00:18:08,440 Speaker 1: I'll tell you because I'm here to try and help 333 00:18:08,440 --> 00:18:14,200 Speaker 1: you to fix it. Disconnect both battery cables, all right, jumper, 334 00:18:14,520 --> 00:18:18,320 Speaker 1: the two battery cables together, the battery cables, not the battery, 335 00:18:19,080 --> 00:18:23,760 Speaker 1: and bleed down the vehicle. Let the system modules bleed down. 336 00:18:24,200 --> 00:18:27,160 Speaker 1: Reconnect them. See if the wipers start working and then 337 00:18:27,160 --> 00:18:28,679 Speaker 1: we can talk from there. Good luck to you. Dam 338 00:18:28,760 --> 00:18:30,040 Speaker 1: let me know what happens. I'm run any of the 339 00:18:30,080 --> 00:18:45,480 Speaker 1: car doctor. We're back right after this for the best 340 00:18:45,520 --> 00:18:48,560 Speaker 1: in car advice. Give Ron a call eight five five 341 00:18:48,880 --> 00:18:55,000 Speaker 1: zero zero zero Now Rob delaware, you're up stand Coop? 342 00:18:55,040 --> 00:19:00,720 Speaker 1: What's going on here? Bib? Hey, thanks for taking my call. Hey, 343 00:19:00,800 --> 00:19:06,360 Speaker 1: I have a cobro. It throws a code every time 344 00:19:06,400 --> 00:19:12,480 Speaker 1: I started lean bank one, lean bank to P zero 345 00:19:12,680 --> 00:19:22,320 Speaker 1: one seven one. Okay, what you what you do? I'm sorry? 346 00:19:22,359 --> 00:19:23,879 Speaker 1: I was gonna say, what have you? What sort of 347 00:19:23,920 --> 00:19:30,679 Speaker 1: diagnostic routine to get done to it? Um? Actually not much. Um. 348 00:19:30,720 --> 00:19:36,160 Speaker 1: The only thing the car has is long tube hadders. Um, 349 00:19:36,200 --> 00:19:41,520 Speaker 1: it's got cats the whole. You know, it's pretty much original. 350 00:19:42,480 --> 00:19:46,240 Speaker 1: Has has has? Have the codes been there since you 351 00:19:46,320 --> 00:19:49,199 Speaker 1: did the header conversion? Or it ran normal with the 352 00:19:49,200 --> 00:19:51,719 Speaker 1: header conversion for a good long time and just recently 353 00:19:51,760 --> 00:19:56,840 Speaker 1: started throwing the codes? Well? Actually, um, I bought the 354 00:19:56,920 --> 00:20:01,240 Speaker 1: car and I don't know the pre vous history of 355 00:20:01,520 --> 00:20:06,840 Speaker 1: any codes. Okay, So you bought it and it's and 356 00:20:06,920 --> 00:20:11,600 Speaker 1: ever since you've had it it throws the codes? Yes, Okay, 357 00:20:11,640 --> 00:20:16,720 Speaker 1: how long have you had the car about five years now, 358 00:20:16,880 --> 00:20:22,960 Speaker 1: all right, So you've been dealing with this for five years. Yeah, yeah, 359 00:20:23,280 --> 00:20:28,399 Speaker 1: I get it. Um, anybody anybody try to diagnose it? No, no, 360 00:20:28,560 --> 00:20:31,240 Speaker 1: not at all right. Do you have a scan tool? Rob? 361 00:20:32,720 --> 00:20:38,600 Speaker 1: All right? Um? What what sort of scantel do you have? Um? 362 00:20:38,800 --> 00:20:43,400 Speaker 1: It's I mean, I'm looking at it right now. What's 363 00:20:43,400 --> 00:20:50,000 Speaker 1: the brand? Okay, Um, it'll it'll, it'll display data stream 364 00:20:50,640 --> 00:20:52,800 Speaker 1: all right. You got a pencil, you got a pencil 365 00:20:52,800 --> 00:20:56,960 Speaker 1: and paper or a good or a good memory, one 366 00:20:56,960 --> 00:20:59,920 Speaker 1: of the two. Because I'm gonna I'm gonna throw memory. 367 00:21:00,040 --> 00:21:02,480 Speaker 1: So I'm getting so I'm gonna throw a bunch of 368 00:21:02,520 --> 00:21:07,880 Speaker 1: information at all right, because it's it's this this, this 369 00:21:08,240 --> 00:21:12,320 Speaker 1: should be fairly obvious. What's here? All right, except that 370 00:21:12,480 --> 00:21:16,040 Speaker 1: back back in the late nineties, four did some different things. 371 00:21:16,760 --> 00:21:18,840 Speaker 1: Fuel trim was fuel trim, But there was a couple 372 00:21:18,920 --> 00:21:22,120 Speaker 1: other indicators, all right that we want to look at. 373 00:21:22,400 --> 00:21:26,280 Speaker 1: So you're ready, okay, start the car up, hook up 374 00:21:26,280 --> 00:21:29,200 Speaker 1: your scan tool. I want you to look for. It's 375 00:21:29,200 --> 00:21:34,080 Speaker 1: gonna say barrow. It's barometric pressure, the barrow pit. All right, 376 00:21:34,800 --> 00:21:39,000 Speaker 1: barometric bar the barrow pit on this car. Um should 377 00:21:39,040 --> 00:21:41,800 Speaker 1: read somewhere between a hundred and fifty and a hundred 378 00:21:41,840 --> 00:21:48,280 Speaker 1: and fifty nine hurts barrow. Barrow is a calculated value 379 00:21:49,200 --> 00:21:54,359 Speaker 1: determined by the mass airflow sensor, all right, So I 380 00:21:54,760 --> 00:21:57,119 Speaker 1: want to see what that I want to see what 381 00:21:57,320 --> 00:22:00,680 Speaker 1: that is in in terms of you know, what's what's 382 00:22:00,720 --> 00:22:06,280 Speaker 1: that reading? All right? So you know, typically you'll see 383 00:22:06,400 --> 00:22:09,800 Speaker 1: one seven on seven four in a barometric pressure pit 384 00:22:10,359 --> 00:22:13,360 Speaker 1: under one forty five, you'll see one thirty five one 385 00:22:13,480 --> 00:22:17,520 Speaker 1: forty and it's it's it's a true lean condition, all right. 386 00:22:18,880 --> 00:22:23,080 Speaker 1: If you see that step one before we go any further, 387 00:22:23,320 --> 00:22:25,560 Speaker 1: just do a visual inspection. And also I want you 388 00:22:25,600 --> 00:22:28,680 Speaker 1: to look at short term fuel trim. Where is short 389 00:22:28,800 --> 00:22:31,080 Speaker 1: term fuel trim? It's gonna display on your scan tool. 390 00:22:31,600 --> 00:22:36,320 Speaker 1: Usually is st FT short term fuel trim, all right. 391 00:22:36,640 --> 00:22:38,760 Speaker 1: There's also gonna be l T f T, which is 392 00:22:38,840 --> 00:22:42,640 Speaker 1: long term fuel trim, all right. And and the difference 393 00:22:42,840 --> 00:22:47,080 Speaker 1: is it's it's it's sort of like eating breakfast. What 394 00:22:47,119 --> 00:22:52,960 Speaker 1: do you have for breakfast today? Rob toasting jelly? Okay, 395 00:22:53,000 --> 00:22:55,119 Speaker 1: so that was your short term today? It was today 396 00:22:55,240 --> 00:22:59,399 Speaker 1: was current? Right, Your current breakfast was toasting jelly. What 397 00:22:59,600 --> 00:23:02,760 Speaker 1: you have? What do you have a week ago? You 398 00:23:02,760 --> 00:23:06,240 Speaker 1: don't remember, but maybe it was scrambled eggs. Right, So 399 00:23:06,359 --> 00:23:10,640 Speaker 1: that's history. That's history, all right. Long term fuel trim 400 00:23:10,720 --> 00:23:13,560 Speaker 1: is history. Short term fuel trim is current. Short term 401 00:23:13,600 --> 00:23:15,439 Speaker 1: is what you're eating today. Long term is what you 402 00:23:15,560 --> 00:23:18,920 Speaker 1: ate yesterday or the week a week ago. It's short 403 00:23:19,040 --> 00:23:22,560 Speaker 1: term is a compilation that makes up long term. Long 404 00:23:22,720 --> 00:23:26,800 Speaker 1: term is the how short term is stacking up? If 405 00:23:26,800 --> 00:23:30,560 Speaker 1: I can say it like that makes sense. So for 406 00:23:30,600 --> 00:23:34,400 Speaker 1: the so for the purposes of diagnosis, I will generally 407 00:23:34,440 --> 00:23:37,680 Speaker 1: look more at short term. What's going on now? Yeah, 408 00:23:37,760 --> 00:23:39,520 Speaker 1: you know, because I could see I could see long 409 00:23:39,640 --> 00:23:42,200 Speaker 1: term of five or ten percent, but it doesn't mean 410 00:23:42,200 --> 00:23:45,640 Speaker 1: anything to me because you'll you'll start to notice you'll 411 00:23:45,680 --> 00:23:49,800 Speaker 1: see cars with short term fuel trim and five percent 412 00:23:49,920 --> 00:23:53,479 Speaker 1: long term, and then you'll see cars with ten percent 413 00:23:53,560 --> 00:23:56,399 Speaker 1: short term fuel trim and five percent long term, and 414 00:23:56,400 --> 00:23:59,240 Speaker 1: you go, gee, it doesn't change. Well, it does. It's 415 00:23:59,280 --> 00:24:02,800 Speaker 1: just that it's it keeps, you know, long term climbs 416 00:24:02,880 --> 00:24:05,639 Speaker 1: till it gets to a point and then it drops 417 00:24:05,680 --> 00:24:09,639 Speaker 1: back to zero, and that brings short term to a 418 00:24:09,640 --> 00:24:11,880 Speaker 1: different place, and then they both start to climb again. 419 00:24:11,920 --> 00:24:14,960 Speaker 1: It's a repetitive process. It's like climbing a game of 420 00:24:15,000 --> 00:24:21,000 Speaker 1: shoots and ladders. Okay, so where's your short term fuel trim? 421 00:24:21,080 --> 00:24:24,560 Speaker 1: If you're sitting lean codes both banks, they're they're gonna 422 00:24:24,600 --> 00:24:28,119 Speaker 1: be excessively high. Normal short term fuel trim is somewhere 423 00:24:28,119 --> 00:24:33,760 Speaker 1: between uh plus zero plus or minus tops warm warm 424 00:24:33,800 --> 00:24:37,040 Speaker 1: engine at idle cruising down the road. That type of thing, 425 00:24:37,400 --> 00:24:42,760 Speaker 1: I'm betting you're gonna see inile range. All right. So 426 00:24:43,440 --> 00:24:47,240 Speaker 1: if if you see high short term fuel trim and 427 00:24:47,320 --> 00:24:51,200 Speaker 1: a low barometric pressure pit where we've then got to 428 00:24:51,240 --> 00:24:54,200 Speaker 1: sit there and say, is the short term off only 429 00:24:54,240 --> 00:24:56,920 Speaker 1: at idle or is it off when you're cruising down 430 00:24:56,920 --> 00:25:00,000 Speaker 1: the road. If it's if short term is excessively high 431 00:25:00,160 --> 00:25:03,560 Speaker 1: only at idle, we've got a vacuum leak. If short 432 00:25:03,680 --> 00:25:06,560 Speaker 1: term is off cruising down the road such that it's 433 00:25:06,600 --> 00:25:11,680 Speaker 1: excessively high, we've got a component driven fault, probably a 434 00:25:11,720 --> 00:25:16,600 Speaker 1: bed or dirty mass airflow sensor. The one thing that's 435 00:25:16,600 --> 00:25:20,320 Speaker 1: gonna skew you in your diagnosis is you've got headers 436 00:25:20,359 --> 00:25:24,399 Speaker 1: on the car, and we don't know if the person 437 00:25:24,480 --> 00:25:27,400 Speaker 1: that did the headers, you know, what did they modify. 438 00:25:27,520 --> 00:25:31,119 Speaker 1: Did they put some sort of software modifier chip in 439 00:25:31,119 --> 00:25:33,440 Speaker 1: the system, somewhere, so you want to poke around for that. 440 00:25:34,840 --> 00:25:38,040 Speaker 1: You know, I don't believe in nineties we could change software. 441 00:25:38,040 --> 00:25:40,960 Speaker 1: I don't think the technology was there yet. But that's 442 00:25:41,000 --> 00:25:45,040 Speaker 1: also a possibility, and we just want to be aware 443 00:25:45,160 --> 00:25:48,199 Speaker 1: that we're we're looking for. First, we're gonna look for 444 00:25:48,240 --> 00:25:51,280 Speaker 1: basic mechanical stuff, and then we're gonna look for the 445 00:25:51,320 --> 00:25:54,320 Speaker 1: stuff outside the realm. What has somebody else done to 446 00:25:54,359 --> 00:25:56,000 Speaker 1: it that it's the fact that it still does it 447 00:25:56,119 --> 00:26:02,840 Speaker 1: five years later, it's still in the car, capiche. All Right? 448 00:26:03,000 --> 00:26:07,280 Speaker 1: You do that, you call give we can we can 449 00:26:07,320 --> 00:26:10,160 Speaker 1: start from there. Last get yourself down to the order 450 00:26:10,200 --> 00:26:11,720 Speaker 1: parts store if you want to pick up a can 451 00:26:11,720 --> 00:26:14,960 Speaker 1: of mass airflow sensor cleaner. I'm not a fan of 452 00:26:15,040 --> 00:26:18,200 Speaker 1: cleaning mass airflow sensors. My theory is that the mass 453 00:26:18,240 --> 00:26:20,359 Speaker 1: airflow sensor is that far out of calibration in that 454 00:26:20,480 --> 00:26:23,240 Speaker 1: dirty you're likely gonna end up replacing it anyway. But 455 00:26:23,280 --> 00:26:25,439 Speaker 1: in the case of a diagnosis, if I clean a 456 00:26:25,440 --> 00:26:28,320 Speaker 1: mass airflow sensor, after I've looked at short term fuel 457 00:26:28,359 --> 00:26:30,919 Speaker 1: trim and after I've written down my numbers, and I 458 00:26:30,960 --> 00:26:35,359 Speaker 1: see a change in how the car is responding, then 459 00:26:35,359 --> 00:26:38,159 Speaker 1: I'm gonna think about replacing the mass airflow because cleaning 460 00:26:38,160 --> 00:26:41,560 Speaker 1: had showed me a difference. All right. Oh and one 461 00:26:41,640 --> 00:26:46,119 Speaker 1: last thing for that generation, run something called CAM reset. 462 00:26:46,680 --> 00:26:50,400 Speaker 1: Keep a live memory reset to reset CAM on that car. 463 00:26:50,440 --> 00:26:52,919 Speaker 1: If you don't have a scan tool, you're gonna have 464 00:26:52,960 --> 00:26:56,280 Speaker 1: to disconnect the battery for a minimum of ten minutes 465 00:26:56,840 --> 00:26:59,639 Speaker 1: to clear out to adapt the fuel strategies. So every 466 00:26:59,640 --> 00:27:02,960 Speaker 1: time you try something to fix it, you know, if 467 00:27:03,000 --> 00:27:05,399 Speaker 1: if if you think you found a vacuum leak and 468 00:27:05,440 --> 00:27:07,880 Speaker 1: you go back with your scan tool and and go, gee, 469 00:27:07,880 --> 00:27:11,560 Speaker 1: the number hasn't changed. You gotta disconnect the battery first. 470 00:27:12,280 --> 00:27:14,440 Speaker 1: You gotta obviously with the engine off and leave a 471 00:27:14,520 --> 00:27:17,400 Speaker 1: disconnected for ten minutes, or by a scan tool with 472 00:27:17,400 --> 00:27:21,280 Speaker 1: with cam reset, it'll be under special functions adapt the fuel, 473 00:27:21,280 --> 00:27:23,560 Speaker 1: trim reset, memory reset, they'll call it a bunch of 474 00:27:23,560 --> 00:27:26,199 Speaker 1: different things. All right, But you can fix that car. 475 00:27:26,320 --> 00:27:28,120 Speaker 1: That car is not hard to fix. It's just it's old. 476 00:27:28,160 --> 00:27:31,800 Speaker 1: Now we've forgotten what that car was about. All right, kid, 477 00:27:33,520 --> 00:27:35,359 Speaker 1: thank you very much. You're very welcome. You let us 478 00:27:35,359 --> 00:27:37,679 Speaker 1: know what happens ronading the car. Doctor. We're back right 479 00:27:37,720 --> 00:27:49,520 Speaker 1: after this. Welcome back on an Indy car. Doctor, Donne 480 00:27:49,520 --> 00:27:51,240 Speaker 1: and Delaware. You're next up? I can I help you? 481 00:27:51,320 --> 00:27:55,159 Speaker 1: My friend? Yes, they're good. What's it sees that my 482 00:27:55,359 --> 00:28:00,320 Speaker 1: single point three times floor jack has become obsolete? So 483 00:28:00,359 --> 00:28:03,080 Speaker 1: I was gonna ask you what you think about these 484 00:28:03,440 --> 00:28:09,280 Speaker 1: cross beam adapters? What is a cross beam adapter? I've 485 00:28:09,320 --> 00:28:11,040 Speaker 1: probably seen it, but I'm not familiar with the term. 486 00:28:11,040 --> 00:28:12,399 Speaker 1: Are you Are you talking about when you say your 487 00:28:12,440 --> 00:28:15,640 Speaker 1: three ton floor jack is obsolete for jacking up cars 488 00:28:15,680 --> 00:28:21,920 Speaker 1: without frames? Is that so basically a spreader bar minimum 489 00:28:22,600 --> 00:28:26,119 Speaker 1: inches has rubber pad on each end. Okay, and you 490 00:28:26,160 --> 00:28:30,280 Speaker 1: bollet to your where you're single point used to be 491 00:28:30,880 --> 00:28:34,560 Speaker 1: just spread that weight that lift weight out. Um. I 492 00:28:34,600 --> 00:28:38,200 Speaker 1: think it's okay, I know what you're asking about. But 493 00:28:38,840 --> 00:28:42,120 Speaker 1: you know there's ways around that will the idea becomes 494 00:28:42,280 --> 00:28:44,840 Speaker 1: It depends on the car. You know, some cars will 495 00:28:44,880 --> 00:28:47,200 Speaker 1: have a well did tab on the on the on 496 00:28:47,240 --> 00:28:50,960 Speaker 1: the pinch weld and that's the lift point. Because you 497 00:28:51,000 --> 00:28:53,360 Speaker 1: know we still we when we lift cars. Let me 498 00:28:53,360 --> 00:28:55,360 Speaker 1: say it like this done, we lift cars in the shop. 499 00:28:55,880 --> 00:28:58,440 Speaker 1: I'm using the same Mohawk lift I bought thirty five 500 00:28:58,520 --> 00:29:01,680 Speaker 1: years ago. Hasn't changed. It's it's the same single point 501 00:29:01,760 --> 00:29:05,360 Speaker 1: contact pad, except we'll look for it. Where's it gonna go? 502 00:29:05,480 --> 00:29:08,600 Speaker 1: We'll we'll lift it on the pinch weld. Sometimes sometimes 503 00:29:08,600 --> 00:29:11,080 Speaker 1: we'll lift it on a special metal tab that's on 504 00:29:11,120 --> 00:29:14,600 Speaker 1: the pinch weld. Sometimes there's a little diamond upside down 505 00:29:14,680 --> 00:29:19,719 Speaker 1: triangle saying hey, lift arm here. So just it's right. 506 00:29:19,760 --> 00:29:23,000 Speaker 1: I got all that, But I think what the deal 507 00:29:23,440 --> 00:29:26,160 Speaker 1: the spreader is. You can put it up between the 508 00:29:26,160 --> 00:29:29,000 Speaker 1: tires and new the car and jack up one whole 509 00:29:29,040 --> 00:29:31,080 Speaker 1: side of the car at one shot. Well, I don't 510 00:29:31,080 --> 00:29:32,280 Speaker 1: know that I would do that, even if I had 511 00:29:32,280 --> 00:29:34,400 Speaker 1: the ability to do it. Why are we trying to 512 00:29:34,440 --> 00:29:40,960 Speaker 1: do that? No, Well, tire rotation. Well, then you throw 513 00:29:41,040 --> 00:29:44,640 Speaker 1: the jack's under that's a bad idea. Well I would. 514 00:29:44,880 --> 00:29:46,680 Speaker 1: I would lift it one corner at a time and 515 00:29:46,680 --> 00:29:48,800 Speaker 1: put a jack stand under it. Why can't I do that? 516 00:29:48,960 --> 00:29:52,000 Speaker 1: Because I'm not gonna I'm not gonna stand here and 517 00:29:52,000 --> 00:29:53,840 Speaker 1: and and tell you that. Yeah, I would trust the 518 00:29:53,920 --> 00:29:56,520 Speaker 1: hydraulic jack while I was rotating tires. I don't let 519 00:29:56,600 --> 00:29:58,160 Speaker 1: mechanics do it at the shop. I wouldn't tell you 520 00:29:58,240 --> 00:30:00,000 Speaker 1: to do it here. Now I wouldn't do it either, 521 00:30:00,400 --> 00:30:02,640 Speaker 1: you know. So it's it's lifted from a single point, 522 00:30:02,680 --> 00:30:04,440 Speaker 1: put a jack stand under it, lifted from the next 523 00:30:04,440 --> 00:30:08,680 Speaker 1: single point. That's number one safety number two. Just because 524 00:30:08,720 --> 00:30:11,320 Speaker 1: I can put a spread bar on it to lift 525 00:30:11,360 --> 00:30:15,360 Speaker 1: it over a wider area, Then what's that do for 526 00:30:15,400 --> 00:30:17,080 Speaker 1: the stability of the car? I don't know that some 527 00:30:17,120 --> 00:30:19,800 Speaker 1: of these cars have the rigidity to do that. Does 528 00:30:19,840 --> 00:30:21,960 Speaker 1: the manufacturer say you can do that or you're just 529 00:30:22,040 --> 00:30:24,920 Speaker 1: going on the assumption because the spreader bar is there 530 00:30:24,960 --> 00:30:30,400 Speaker 1: to spread the load of the jack outs, I'm not going. Yeah, 531 00:30:30,480 --> 00:30:34,080 Speaker 1: that's that's why I would never do it. Um. You 532 00:30:34,120 --> 00:30:37,760 Speaker 1: know cars today, some of them, we don't lift a 533 00:30:37,760 --> 00:30:39,520 Speaker 1: lot of them. We lift a Corvette, and I realized 534 00:30:39,560 --> 00:30:41,560 Speaker 1: the Corvette is an extreme example. Just to give you 535 00:30:41,560 --> 00:30:44,200 Speaker 1: an idea, I've never lifted a Corvette in my career 536 00:30:44,200 --> 00:30:47,200 Speaker 1: where I don't pop the doors and I don't I 537 00:30:47,240 --> 00:30:50,920 Speaker 1: don't pop the hood because the body flex. And you 538 00:30:50,960 --> 00:30:53,400 Speaker 1: know right now, I've got my my seventy two Monty Carlo, 539 00:30:53,440 --> 00:30:56,240 Speaker 1: which is a full frame vehicle on the lift while 540 00:30:56,240 --> 00:30:59,520 Speaker 1: we're doing suspension work, and I won't leave it up 541 00:30:59,520 --> 00:31:01,920 Speaker 1: in the year are uh And I've got I'm missing 542 00:31:01,920 --> 00:31:03,480 Speaker 1: the left front tire. I won't leave it up in 543 00:31:03,480 --> 00:31:05,920 Speaker 1: the air for long periods of time unless we're working 544 00:31:05,960 --> 00:31:07,600 Speaker 1: on it. But you know, you can put a car 545 00:31:07,680 --> 00:31:09,479 Speaker 1: up in the air and forget about it. You'll put 546 00:31:09,560 --> 00:31:12,520 Speaker 1: that car down. I've had cars come down even supported 547 00:31:12,560 --> 00:31:16,640 Speaker 1: on a lift where you know, the chassis'll start to sag. 548 00:31:16,720 --> 00:31:19,560 Speaker 1: You'll see cracks in the A pillar where the roofline 549 00:31:19,600 --> 00:31:23,920 Speaker 1: meets uh. You know. So long term, it's easier and 550 00:31:23,960 --> 00:31:26,160 Speaker 1: safe for Jack to use. Use your floor jack. You 551 00:31:26,160 --> 00:31:28,280 Speaker 1: get to keep your floor jack. Go buy yourself a 552 00:31:28,320 --> 00:31:31,000 Speaker 1: pair of jack Stans. Jacket up Jack Stan, Jack Stan, 553 00:31:31,120 --> 00:31:35,600 Speaker 1: rotate your tires, move on to the next side. It's yeah, no, 554 00:31:35,760 --> 00:31:39,560 Speaker 1: it's either that or buy yourself a lift. Lifts, Hey, 555 00:31:39,800 --> 00:31:43,200 Speaker 1: lifts are cheap enough. You know what. Lifts are cheap enough, 556 00:31:43,280 --> 00:31:45,400 Speaker 1: and and and your life is worth more in the shear. 557 00:31:45,720 --> 00:31:47,400 Speaker 1: If you're a car guy and you've got room in 558 00:31:47,440 --> 00:31:51,320 Speaker 1: the garage, you know what, by Mama something new that 559 00:31:51,360 --> 00:31:53,720 Speaker 1: she wants. By yourself a lift. It's just easier and 560 00:31:53,800 --> 00:31:57,000 Speaker 1: safer in the long run. Life's too short, do it right, 561 00:31:58,000 --> 00:32:00,320 Speaker 1: I get you all right, You're very welcome. You take 562 00:32:00,320 --> 00:32:04,000 Speaker 1: good care, zero running any of the car doctor coming 563 00:32:04,000 --> 00:32:12,440 Speaker 1: back right after this, Hey, we're back. We're on any 564 00:32:12,440 --> 00:32:14,600 Speaker 1: of the car doctor winding it down. Frank in Minnesota. 565 00:32:14,640 --> 00:32:17,320 Speaker 1: What's going on, sir? How can I help? Hi? Ron 566 00:32:17,560 --> 00:32:21,040 Speaker 1: quick one for you? Scan tools, code readers for home 567 00:32:21,080 --> 00:32:25,520 Speaker 1: shop use? Uh, you're anything under let's say five dollars 568 00:32:25,920 --> 00:32:29,800 Speaker 1: maybe in that range and under that would be good quality. 569 00:32:30,440 --> 00:32:33,200 Speaker 1: Your recommendation squeeze bang for the buck, brother, It's all 570 00:32:33,240 --> 00:32:35,960 Speaker 1: about bang for the buck. I I used to and 571 00:32:36,040 --> 00:32:38,240 Speaker 1: I probably still do hanging around the shop, have seventeen 572 00:32:38,280 --> 00:32:40,560 Speaker 1: or eighteen different scan tools. I've narrowed it down in 573 00:32:40,600 --> 00:32:43,000 Speaker 1: the last year because I said, you know, I wasn't. 574 00:32:43,120 --> 00:32:44,960 Speaker 1: I was good with all of them, but not great. 575 00:32:44,960 --> 00:32:46,560 Speaker 1: And I wanted to be great with all the tools 576 00:32:46,560 --> 00:32:48,840 Speaker 1: I use because it's you know, it's like having eighteen 577 00:32:48,840 --> 00:32:50,520 Speaker 1: cars in the fleet. How many can you drive and 578 00:32:50,520 --> 00:32:52,680 Speaker 1: how many do you get used to operating? And how 579 00:32:52,680 --> 00:32:55,400 Speaker 1: they really work. I've narrowed my field of choice for 580 00:32:55,480 --> 00:32:57,959 Speaker 1: scan tools right now down to just a few. Well, 581 00:32:58,040 --> 00:33:00,600 Speaker 1: use a snap on Motus as an everyday basis too 582 00:33:00,600 --> 00:33:03,320 Speaker 1: expensive out of your price point range. Modus has a 583 00:33:03,360 --> 00:33:05,320 Speaker 1: lot to offer, It has a lot in the tool 584 00:33:05,680 --> 00:33:08,080 Speaker 1: little pricey, a little tough keeping up with a subscription, 585 00:33:08,120 --> 00:33:10,560 Speaker 1: but it's there and it works. I give him that launch. 586 00:33:11,000 --> 00:33:14,720 Speaker 1: Launch makes some excellent products, great price point. I'm sure 587 00:33:14,760 --> 00:33:17,200 Speaker 1: you'll find something in your price range. I would think 588 00:33:17,200 --> 00:33:20,160 Speaker 1: the Millennium ninety pro is probably there for the do 589 00:33:20,280 --> 00:33:22,480 Speaker 1: it yourself for at home. There was also talk of 590 00:33:22,520 --> 00:33:26,360 Speaker 1: them coming out with a secondary newer tool uh gearhead gearbox, 591 00:33:26,400 --> 00:33:29,920 Speaker 1: something like that a year ago. I haven't seen it yet, UM, 592 00:33:30,000 --> 00:33:32,040 Speaker 1: but you know, if it's like the rest of the 593 00:33:32,120 --> 00:33:34,760 Speaker 1: Launch product, it's well thought out and it does its job. 594 00:33:35,280 --> 00:33:37,560 Speaker 1: So I've got to think it out the Launch tech 595 00:33:37,640 --> 00:33:41,200 Speaker 1: USA dot com take a look at what they have. UM. 596 00:33:41,400 --> 00:33:45,320 Speaker 1: I also tend to want to look on eBay what 597 00:33:45,360 --> 00:33:49,440 Speaker 1: are shops getting rid of Sometimes you know, if if 598 00:33:49,480 --> 00:33:52,080 Speaker 1: if five hundred or eight hundred or a thousand bucks, 599 00:33:52,120 --> 00:33:54,400 Speaker 1: I know it's out of your price point, could get 600 00:33:54,480 --> 00:33:59,960 Speaker 1: you a used Modus or used Listen, the OTC Genesis 601 00:34:00,240 --> 00:34:02,560 Speaker 1: wasn't a bad tool in its day, So there are 602 00:34:02,600 --> 00:34:05,600 Speaker 1: things out on eBay that that will work. Just how 603 00:34:05,680 --> 00:34:07,760 Speaker 1: beat up are they and you know how worn out 604 00:34:07,800 --> 00:34:10,600 Speaker 1: are they? Um, You've got to think in terms of 605 00:34:10,719 --> 00:34:12,840 Speaker 1: how new is your fleet? What's the newest car in 606 00:34:12,880 --> 00:34:18,319 Speaker 1: your fleet? Okay, uh you know so, uh you know 607 00:34:18,960 --> 00:34:21,480 Speaker 1: Launch would work on that, the older snap on stuff 608 00:34:21,520 --> 00:34:24,480 Speaker 1: would work on that, and OTC Genesis would work on that. 609 00:34:25,080 --> 00:34:28,239 Speaker 1: Um you know it's it's for you. It's gonna be 610 00:34:28,280 --> 00:34:31,040 Speaker 1: about you need O b D two because understand O 611 00:34:31,200 --> 00:34:34,480 Speaker 1: b D two is my primary software language, primary scan 612 00:34:34,560 --> 00:34:37,239 Speaker 1: tool I use for diagnosing. I get a car with 613 00:34:37,280 --> 00:34:39,879 Speaker 1: a check engine line on, I grabbed the cheap tool 614 00:34:39,920 --> 00:34:42,040 Speaker 1: by the by the corner. It's my sp X O 615 00:34:42,120 --> 00:34:46,000 Speaker 1: TC blue and gray. It's probably eighteen years old, and 616 00:34:46,120 --> 00:34:48,120 Speaker 1: that gets me the fault code. It's a trip around 617 00:34:48,160 --> 00:34:49,719 Speaker 1: the block. It's a look at fuel trim, it's a 618 00:34:49,719 --> 00:34:52,479 Speaker 1: look at calculated load. What am I chasing? What code? 619 00:34:52,520 --> 00:34:54,879 Speaker 1: And so on. I don't get out the big gun 620 00:34:55,560 --> 00:34:58,000 Speaker 1: until I get a better direction after probably the first 621 00:34:58,040 --> 00:35:00,600 Speaker 1: forty five minutes diagnosis. And sometimes I don't have to. 622 00:35:00,719 --> 00:35:05,400 Speaker 1: Sometimes I fix it with the cheapie. So master the master, 623 00:35:05,520 --> 00:35:07,759 Speaker 1: the scan tool, Master the simple stuff. You go onto 624 00:35:07,760 --> 00:35:10,800 Speaker 1: the newer stuff, get out to Amazon, spend thirty bucks. 625 00:35:10,840 --> 00:35:13,840 Speaker 1: O b D two Diagnostics Made Easy. Steve Cook is 626 00:35:13,880 --> 00:35:16,080 Speaker 1: the author. Take a look at that, get that book 627 00:35:16,080 --> 00:35:17,919 Speaker 1: and read that. I'm not an ad in the car Doctor. 628 00:35:18,000 --> 00:35:26,920 Speaker 1: The mechanics aren't expensive, they're priceless.