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Prev Professional Automotive Repair Technical Discussions for May 3, 2013
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Open Help Requests for All Makes and Models
Help Request Answers
2001 Audi A4 1.8L No Start VIN: WAUDC68D01
Easy question for you European afficienados. Can you put a used engine computer in an '01 Audi A4 Quattro 1.8 turbo. If you can, will it have to be programmed? Thanks, Allen
1963 Chevrolet C20 Pickup 4.8L Poor Idle Quality VIN: 3C254J1084
So I probably shouldn't be working on stuff 6 years older than me but here goes... This is a good customers daily driver that came in last fall because it wouldn't idle. Customer replaced points and played with timing. I didn't have room to get it in my shop, ...
2004 Chevrolet Silverado 1500 5.3L ABS module VIN: 1GCEC19T24
This '05 Silverado keeps popping a C0238 Wheel Speed Mismatch code. Sure enough the ABS data shows the front wheels going 4mph faster than the rear at all times. The rear signal comes from the ecm via the vss signal. The rear matches the speedometer. The tires...
2008 Chevrolet Tahoe LTZ 5.3L Hesitation VIN: 1GNFC13038
Complaint is a lack of power with poor running engine and even a stall out when coming to a stop. Customer states its "starving for fuel" and wont pull or go. He says its just like its out of gas. It has happened on the interstate as well as a cold start but v... Trouble codes: P0192 (Fuel rail pressure sense low volts)
2001 Chrysler Town & Country (Van) EX 3.8L No Start, Hesitation, Surge, Cuts out, Stall, Misfire, MIL Lamp on VIN: 2C8GP74L51
This van has been getting progressively worse over the last year. It has been hit and repaired in the left front, before my customer purchased it. We have repaired the cooling fan circuit wires, rerepaired a few other wires, and replaced the computer. Each tim...
1985 Dodge B250 5.2L nox VIN: 2B6HB23T1F
I test the egr system and think that very possible it will be computer, at this model being old I have certain uneasiness, did somebody run into same problem? when apply vacuum directly nox will go down dramatically, thans for you help guys.
2000 Dodge Durango 5.9L Ecm VIN: 1B4HR28Z1Y
This truck runs with original computer,but sets code for shorted iac.I have tried to program with my Snap-on pass thru pro. With the tool I can reset sri write the vin and mi leage no problem .The tool shows VIN module # mileage no problem.When I go to the web...
2007 Dodge Ram 2500 Truck SLT 5.9L engine VIN: 3D7KS29C87
Working on a 07 Dodge Mega cab with 5.9 deisle, very long crank hot restart will start if primed with wd 40. Vehicle came to us with poor running, and long hot restart crank, we started with a fuel system test, lift pump putting out 750 ml of fuel in timed cyc...
1997 Ford F-250 Lariat 5.4L Monitors VIN: 2FTFF28L8V
Customer concern is failed emissions due to not enough readyness monitors run. After driving over 2 months and multiple visits to test station, customer contiues to be turned away for retest due to 2 monitors not running. The only 2 that have not run were cata...
1994 Honda Civic EX 1.6L Poor Idle Quality, Surge VIN: 2HGEJ1129R
Vehicle came for rpm flunctuates between 600 to 1000 when sits at idle. I check for vacuum leak, good. Pull IAC valve off and carbon buid up. Replace with a new one and clean throttle. Vehicle still act up the same with rpm flunctuates. Any help would be appre...
2003 Land Rover Discovery SE 4.6L Lifters VIN: SALTW16413
HI Rover Techs i need help. I have a 2003 Disco 4.6 liter with very noisy valve train. Came in with what sounded like a collpased lifter. Sales dept authorized replacement of lifters. While apart noticed the block and crank were replaced with new but old rods ...
2000 Lincoln Navigator 5.4L MIL Lamp on, limp-mode VIN: 5LMEU27A8Y
I'm posting this for another shop who is desperate for help. The car is running in limp mode and the mil is on. The #23 fuse in the engine compartment blows as soon as it is replaced. Disconnecting the wire plug at the ECM is the only thing that keeps the fuse...
2007 Mazda CX-7 Touring 2.3L enigne VIN: JM3ER29307
At the 1st start up there is a noise like an air pump that is failing and super loud. The vehicle is not equipped with an air pump. The customer is also noticed excessive tail pipe smoke. We are aware of the TSBs for an updated PCV system. However we can't tel...
2000 Mercedes-Benz S500 Guard 5.0L Hesitation, Surge, Misfire, MIL Lamp on VIN: WDBNG75J4Y
Could not get starter to engage, new battery was discharged. Renewed starter and vehicle cranked and started. Ran poorly and would not accelerate. Scanned multiple times, finally on OBD II setting (Launch X-431) was able to get misfire codes and Mil started fl... Trouble codes: P0300 (Multiple misfires detected), P0305 (Misfire cylinder 5), P0306 (Misfire cylinder 6), P0307 (Misfire cylinder 7), C1504 (Steering angle sensor is not initialized)
2006 Nissan Sentra S 1.8L MIL Lamp on VIN: 3N1CB51D16
This car will not start up with first turn of key. On second try it will start and run rough for a few seconds and set a code for camshaft sensor circuit. There is a new camshaft sensor installed . If the code is cleared after it stars and runs it will not set... Trouble codes: P0340 (camshaft sensor circuit)
1996 Plymouth Grand Voyager SE 3.3L ignition system VIN: 1P4GP44R6T
Hello everyone! We have this lovely van here that will not start. There is no injection pulse and no spark. We have already tried replacing the cam and crank sensors (aftermarket parts), to no avail. Still wont start. There is a code p0340 stored in the compu...
2003 Saturn Vue 2.2L security VIN: 5GZCZ23D23
this vehicle came in as a no start. when you turn the key on the security light stays on for a few seconds and goes off. then it comes right back on and when it does it the intertior lights flash and the daytime running lights flash as keeps doing it o...
2008 Subaru Outback 2.5i 2.5L Compressor VIN: 4S4BP60C98
The compressor cycles on and off too quick
2000 Toyota 4Runner SR5 3.4L MIL Lamp on VIN: JT3HN86RXY
This vehicle came in after replacing both valve cover gaskets. Now has knock sensor codes both banks. Vehicle does run rough at times, unable to catch any readings when it does it, usually under hard acceleration. We replaced both knock sensors, visually inspe... Trouble codes: P0325, P0330
2000 Volkswagen Beetle GLS 1.8L evap temp VIN: 3VWCD21C1Y
Hi VW Techs, we have a 2000 beetle 1.8 turbo manual trans. That has some strange a/c problem. the system originally had a complaint of system int. blowing cool but not cold. We had vehicle for about a week, started vehicle and ran a/c a number of times with o...
2005 Volvo S40 T5 2.5L MIL Lamp on VIN: YV1MS68285
hello Volvo experts! car came to me with constant misfire (3100). found autolite plugs installed.I then replaced with factory plugs. ran perfect. 5000 miles latter, customer brought in vehicle for MIL. has code 3100. customer says car drives perfect. i looked ... Trouble codes: 3100 (random multiple misfire)

Fixes & Summaries for All Makes and Models
Fix/Summary Answers
1999 Daewoo Leganza SE 2.2L Excessive Emissions VIN: KLAVB6929X
Well, we got er dun. Thank you for all your help. You know its not very often i get stumped like this but it happens to the best of us. Thank you very much to the two of ya for the description on the filter monitor and MAP monitoring, very insightful and takin... Trouble codes: P0401 (Egr flow insufficient detected).
2000 Dodge Dakota SLT 4.7L Transmission Control Module VIN: 1B7GL2AN8Y
This was a tough one to figure out. Only 3 replies. I took the assumption that the power for the tcm came out of the instrument cluster and ordered a reman cluster. Installed it and still had the same issue. Wiring diagram for Circuit A81 (8w-40-2) shows the d...
2005 Dodge Magnum SE 2.7L Poor Idle Quality, Loss of throttle VIN: 2D4FV48T85
After many hours of testing wiring etc., We replaced the PCM (again) and the problem is cured. The odds of having a replacement oem pcm bad is so small, I have to wonder if the miss could have caused the coil to spike the pcm and kill it 2x. Trouble codes: P2101, P2110, P2118, B2213, B1B02.
2002 Ford F-150 XL 4.2L Poor Idle Quality VIN: 1FTRX17292
Well, I came in this morning with some good advise-To check connections--I saw a starter solinoid mounted to the fire wall and noticed the positive main cable from the battery was loose-tried to tighten it up but the stud was spinning-Bingo there was our bad c...
1998 GMC K1500 Sierra SLE 5.7L Poor Idle Quality, Misfire, Poor Fuel Economy, MIL Lamp on, sometimes har start VIN: 3GKFK16R7W
Hey everyone, thanks for all of the help and attempted help. So unfortunately the truck started running fine again and i have not been able to re-create the misfire situation for the last 3 weeks. Seemed like a lot of people agreed that it may have something... Trouble codes: P0305, P0300.
2004 GMC Savana 3500 6.0L power steering
Installed another pump. Found a stuck pressure valve in pump. Thanks everyone for the help.
2008 Honda Civic LX 1.8L Limp Mode VIN: 2HGFG12688
What happens was, there is a break in a wire right at the neck of the ecm harness, this wire break or cut but was hiding in the insulator... so i decided to begin pulling wires from the harness connector, behind, and by God grace, i discovered one wire which ...
2009 Honda Element EX 2.4L wheel speed sensor VIN: 5J6YH28799
The aftermarket hub assembly had an erractic signal and set exciter ring code{although it functioned }.Replaced with a second unit and its repaired.Thanks for helping me figure out how it functioned.
2005 Jaguar XJ8 4.2L No Start VIN: SAJWA79C85
Thanks for the help, but we had to stop working on the car, the costumer did not want to pay for the diagnostic time. Trouble codes: P1582.
2000 Jeep Wrangler Sahara 4.0L Clutch VIN: 1J4FA59S0Y
After removing and inspecting the clutch and finding no problems upon closer inspection found that the starter gear and flywheel had been touching-ordered a new starter and compared-the jeeps original starter-or I should say recently replaced starter from anot...
2002 Jeep Grand Cherokee Laredo 4.0L Reverse Shudder VIN: 1J4GW48S12
1995 Lexus ES300 3.0L Unknown VIN: JT8GK13T5S
I would like to thank everyone who replied. By unpluuging all 12 volt related sensors and components, I pin pointed it down to the pcm itself, after the fact that the customer told me that someone jump started his car, and the customer saw sparks. The vehicle ...
2006 Lexus RX330 3.3L Poor Idle Quality, MIL Lamp on VIN: 2T2HA31U16
well, after over thinking the issue, the customer took the car over the weekend, put about 200 miles on it, and the car made it simple. Dead cylinder on # 6, we originally swapped # 2 & # 6 injectors, Not all from front to rear ( my mistake ) , replaced the 3 ... Trouble codes: P0174, P00, 302 (miss fire 2).
2005 Mazda 6 S 3.0L oil pressure VIN: 1YVHP84D15
well really dont call this a fix as you can not fix something that is not broke...we felt we had covered all our bases so we contacted the maker of the oil pump.we were told that engine could have up to 90 psi of oil pressure and that the pump had been "packed...
2005 Mercedes-Benz C240 4Matic 2.6L Coolant in oil VIN: WDBRF81J35
Hi Guys, I gave the car back to the owner without repairs. Bill and Bryan from California told me that it is most likely the timing cover gaskets and that I could see if I removed the water pump and looked inside the passages. The customer is a regular and wi...
2000 Nissan Maxima GLE 3.0L MIL Lamp on VIN: JN1CA31D0Y
Hey folks! Sorry for taking so long! After hours of diagnostics, I suggested that PCM have to be bad( didn't find short inside) but my friend that owns the garage said probably the car owner will not go ahead to have done but just in case he decide to do it th... Trouble codes: P0505 (Idle control System malfunction).
2001 Nissan Xterra SE 3.3L Main Fuse VIN: 5N1ED28T41
Thanks for all of the responses. I had already check all of the suggestions. Hoping someone had seen this before. I took a shot at it and replaced alternator.I think going into reverse was just coincidental. Owner has driven 175 miles without any problems afte...
2007 Nissan Quest SL 3.5L fuel sender VIN: 5N1BV28U97
Found problem with cluster/connection. Customer returned vehicle yesterday and after consulting schematic in between and scrutinizing how circuit worked, I determined it had to be something with the cluster. In my haste to get vehicle diagnosed and fixed to ...
2003 Saab 9-3 Linear 2.0L Programming VIN: YS3FB49S63
i got some good info from all. i did finally get saabtechinfo to get back to me and 4 days of trying. finally they said they could'nt figure it out and that i should get a new email. that worked i bought my tis and im working through all the programming issues...
2002 Saturn SL2 1.9L p0341 VIN: 1G8ZK52732
as far as I know I think this one is finally fixed with a new ignition control module and new coils because its my neighbor Im able to talk to hi on a regular basis and I also scanned the car for I trip codes and none were present Thanks every one for all the ...
2003 Volkswagen Jetta GLS 1.8L Power Brake Booster VIN: 3VWSE69M03
This one is finally fixed!. Ended up getting a reman booster and the hissing is gone. I thought I was going crazy however, my suspicions were correct everytime, all four defective used boosters with identical symptoms. What are the chances? Thanks to everyon...
2005 Volkswagen Golf TDI 1.9L oil in bellhousing VIN: 9BWGR61J65
prob. front seal customer does not want to dissasemble at this time . thanks all
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