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Prev Professional Automotive Repair Technical Discussions for March 20, 2010
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Help Request Answers
2002 Audi A4 Quattro 1.8L heater VIN: WAULC68E82
the car is right up to running temperature, the olny way to get the coolant moving through the heater core is to rev the engine up to 4K rpm. when the engine is at idle you can remove the lines going to the heater core(firewall) and olny a small stream comes o...
2000 BMW 323i 2.5L Steering VIN: WBAAM3342Y
Vehicle is hard to steer and only makes noise when when trying to steer. No noise with wheels in straight ahead position.P/S system is full of fluid.I pressure tested the pump and pump is working, but pressure is flucuating very rapidly,so much so that it is d...
1998 Cadillac Eldorado ESC 4.6L idle high VIN: 1G6ET1294W
got a 1998 cadi that idles at 925 and the iac count is at 0. used smoke to check for intake vaccum leaks and nothing also used propane and carb cleaner just in case. p/s pressure switch is ok all sensers ok egr ok code is p0507. even tried adjusting throttle s... Trouble codes: P0507
2002 Chevrolet Malibu 3.1L No Start VIN: 1G1ND52J22
This vehicle will have a no-start condition usually after 30 min. drives but it will do it any time it chooses. There is a GM TSB for this symptom (and codes) that has a repair or checking the ground at the transmission to engine case bolt. I installed shake... Trouble codes: U1040, U1000
2007 Chevrolet Express 2500 4.8L Cuts out VIN: 1GCGG25V87
Hello I have a g van that sometimes while driving it will go from driving down the road and then only idle. They say if they give it gas it wont do anything. It has happened 2 times to customer 1 time they restarted, the other they turned around and it started...
1999 Dodge Caravan 3.0L Poor Idle Quality, Hesitation, Surge, Cuts out, Misfire, MIL Lamp on VIN: 2B4FP2530X
I have a gem here. Gut says PCM. This van has multiple codes. Has severe misfire even at steady speeds(ALMOST all the time) but occasionally will run smooth at steady cruise. It starts and idles great. Under accel will usually fall flat on its face and as you ... Trouble codes: P0300 (random/multiple cylinder misfire), P0420 (Catalyst Efficiency failure), P0125 (Closed loop temperatrure not reached), P1281 (Engine cold too long), P1695 (No Body bus message), P1698 (No trans bus message)
1991 Ford Mustang LX 2.3L MIL Lamp on VIN: 1FACP44M5M
customer stated after he jump started dtc appeared.he did cross jumper cables.i replaced cigar fuse only,others check out icm i scoped crank sig, pip but did notice missing lower screw to icm and damage to idm wire.i repairs wire and installed missing ... Trouble codes: 222 (loss of ignition diag monitor sig rt side)
1996 Ford Mustang 3.8L No Start VIN: 1FALP4043T
I was sent this mustang that will not start. I have done every test I can think of and I can say this: No spark ever, the injector pulse disappears after 3-5 seconds of cranking and the check engine light re-illuminates at the same time the injector pulse stop...
1997 Ford Mustang SVT Cobra 4.6L pats VIN: 1FALP47VXV
I have a 97 Mustang SVT Cobra brought to the shop for clutch kit/flywheel/rear main seal and adapter plate replacement. Also customer had lost his remote RKE fob and wanted a new replacement and also requested 2 additional PATS keys.(Only one original key rema...
1999 Ford Windstar 3.8L Misfire, MIL Lamp on VIN: 2FMZA5140X
pulled out #2 plug and replaced, replaced coil pack, this misses under load between 1200- 1700 rpms hot pull hose off egr valve runs fine, tried an egr sol. and egr press sensor, ckd back pressure and it was 0 or neg., comp is commanding egr on this seems too ... Trouble codes: 302 (cyc 2 misfire)
2004 Ford Crown Victoria 4.6L stating relay coil side, turn signals are inop VIN: 2FAFP74W84
I have a 2004 for crown vic that came in with a no start condition, also come to find the turn signals are inop too. I have been using for wiring diagrams. I started at the stater relay, I was getting a constant 6.5 volts in all ke...
2001 GMC Sonoma SL 4.3L Hesitation, Stall, MIL Lamp on VIN: 1GTD19WX1K
This issue only happens about once a week or less and is always at highway speeds. The vehicle will begin to loose power, slow and possibly stall. Once on the side of the road and waiting a few minutes he can drive on with no problems. This has been happening ... Trouble codes: P1010, P0300
2004 GMC Sierra 1500 5.3L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GTEK14T74
I replaced the intake manifold gaskets and the fuel pump. The pump was in spec on pressure but customer chose to replace it as a preventative repair. The intake gaskets were replaced because of suspicsion of a vac. leak and I swear I still hear it on the drive... Trouble codes: P0300 (Misfire)
2006 GMC C5500 Topkick C5E044 6.6L limp mode VIN: 1GDE5E1276
hello iatn members i have a 06 duramax with an allison trans that will go fo 5 to 10 miles normal before it goes into a limp mode and sets a u0100 code. i dont do many diesels but this tow truck brings me a lot of work and the dealer cant get it in for almost ...
1993 Honda Accord EX 2.2L Excessive Emissions VIN: JHMCB7651P
When O2 sensored monitored at idle its stays flat @ 900mv-930mv. Vacuum leak induced goes down 200 and will fluctuate between 200-600mv. At 2500 O2 350-520mv doesn't go lean to rich low enough but I it does when you enrichen system or create vacuum leak. Beliv...
1999 Honda Accord EX 2.3L Misfire VIN: 1HGCG5558X
ok i have 2 honda's with the same problem. i have done a tune-up, i dont think its a disturbtor. i think its a bad map sensor, but i dont want to start replacing parts that i dont have to. jus want some suggestions on what to look at first. the vehicles are co... Trouble codes: P1399 (misfire in all cylinders)
2003 Infiniti G35 3.5L window motor VIN: JWKCV54643
Guys need some help here I have a window on this that goes all the way up and then down about 4 inches. In other words it will not stay fully closed when using auto up. I tried to find something on here about reprogramming the window but only found the fx35 pr...
1987 Mercedes-Benz 420SEL 4.2L Stall VIN: CA3503HA32
car brought for an intermittent stall and i has not stalled yet since we got the car. no codes found and no visible problem that we see. customer stated that sometimes it takes a few days before it happens. do you have input on these problem? it drives fine an...
2001 Mercedes-Benz E320 3.2L display defetive lamp warning on VIN: WDBJF65J51
Car came in with left DRL(fog) not working and a complaint of smoke from left side of dash/instrument panel. Upon inspection found lighting module/headlamp switch had shorted due to overheating. Replaced module, 2 connector bodies, and all terminals for both c...
1994 Mitsubishi Montero SR 3.5L Compresser VIN: JA4MR51M7R
I did an ac service on this montero, afterwards the compressor wasnt running. Found the wire unplugged, plugged it in still inop. Found no power to compressor. Tried jumping the pressure switch no go. Compressor relay is ok, but ECM isnt grounding the relay. I...
1989 Oldsmobile Cutlass Supreme SL 3.1L Poor Idle Quality, Hesitation, Surge, Stall, MIL Lamp on VIN: 1G3WS14T1K
Vehicle towed in no start. checked for codes found 33 map sensor high. Tested circuit for map sensor and found bad ecm. replaced ecm and then found 5 of 6 injectors bad. replaced all 6 and got vehicle started. now i am fighting both map high codes and map low ... Trouble codes: 33 (map sensor high), 34 (map sensor low)
2001 Saab 9-5 SE 3.0L No Start VIN: YS3ED55E91
I was reprogramming the ECM in this thing and within 20 seconds of being done the programming stopped and gave me an error code. It offered to retry, I said OK and tried it probably 15 more times. It would stop at different points and never finished. I was us...
1996 Saturn SW1 1.9L five speed standard transmission VIN: 1G82G8286T
Hello Friends, This 1996 Saturn SW1 1.9 Lt. with a five speed standard transmission. The lady on a rainy day went through a puddle of water, right after that she couldn't shift into second gear.She drove the car to my shop, shifting from first to third gear.W...
1998 Volvo V70 2.4L will not set monitor VIN: YV1LZ5640W
Clear code for coolant temp sensor after replacing coolant temp sensor can not run the monitors to run the smog, have tried setting it up with tech service bulletin 0059 after two consecutive trips zero monitors set and no codes come back, have tried removing ...

Fixes & Summaries for All Makes and Models
Fix/Summary Answers
1993 Audi 100 S 2.8L oil pressure VIN: WAUBJ84A4P
found sticking oil relief valve from meatl from rod bearings customer declined repairs thanks for all the help mark
2001 Audi TT Quattro 1.8L Instument cluster VIN: TRUUT28N51
We should have payed more attention to the finger prints on the "new" cluster. We did not enter the milage. Someone previously had done it. The Audi dealer supplied us with a virgin new cluster, and the milage was entered with no problem. There were a lot o...
1997 BMW 328i 2.8L Unknown VIN: WBACD432XZ
Thank You for the help.I wasn't able to do anthing for my customer as I didn't have any capability to scan this car beyond obd. Does anyone know of a good tool for BMw Volvo Mercedes. I have VCDS for VW Audi work. I had been looking at an X12 I think?? I need...
1989 Chevrolet Camaro Iroc-Z 5.0L No Start, Cuts out VIN: 1G1FP31F0K
First I would like to thank all 65 of you who replied, of who 95% said to replace all the injectors. I bought 8 new injectors from Summit Racing and presto. Not an easy job thou. The customer was all smiles. The hardest part was the injectors would only test b... Trouble codes: 45 (Rich [...] Indicated).
1995 Chevrolet S10 2.2L trans, speedometer VIN: 1GCCS1444S
Thanks to everyone for the replies. Sorry for the slow response, but the customer has owed me some money for almost two months, so I refused to dig any deeper until he comes up with the dough. My gut tells me that the PRNDL sensor is telling the cluster and th...
2009 Chevrolet Malibu LS 2.4L MIL Lamp on VIN: 1G1ZG57B89
THANK YOU ALL, Most said it is too new, check for warranty and just clear the code.the evap system check ok.I compared the ftp reading to 1998 malibu and it almost identical so I cleared the code.It's been 2weeks and no comeback yet. thank again. Rick Trouble codes: P0451 (fuel tank pressure sensor performance).
2001 Dodge Intrepid SE 2.7L No Start, control pulse 2 coil
OK guys, I had been out of the business a couple years and got back into it last spring, of course I was always helping folks while I was out of the field. This one tossed me a curve ball, and the cause was simple. Even though 2 of us double checked the tim...
2003 Dodge Ram 1500 Truck 4.7L Blower motor VIN: 1D7HA16N03
thanks for all the help.Turns out yhe problem was an intermittent ground.
1976 Ford Ranchero GT 5.8L Excessive Emissions VIN: 6A47H12210
thanks to all the vacuum diagrams that i received i was able to rout them correctly. ran smog test and vehicle passed, i had high nox about 2135ppm, now it came down to 376ppm wich is way under the limit, also engine does not hasitate when egr valve opens. so ...
1988 Ford E-150 Econoline Custom 5.8L steering column shift lock VIN: 1FMEE11H5J
Thanks for the hints guys. Since a few of you suggested replacing the column, and since it seemed that the only way I was going to get that piece of pot metal out of the hole was by removing the column, that's exactly what I did. Once on the bench, I took th...
1994 Ford F-350 XL 7.5L abs system VIN: 1FDKF37GCR
everything we checked led us to the antilock brake comp customer declinded repairs at this time.
2007 Ford Five Hundred SEL 3.0L All gears VIN: 1FAHP25157
Thanks for taking the time to post. The car has a salvage title so the warranty is void. But the fix is a whole valvebody. I did not find anybody that will sell individaul parts for this valvebody yet. So customer end up buying a valvebody. Thanks Wes
1988 GMC K1500 Sierra 5.7L Low Fluid Pressure VIN: 2GTEK14K4K
Thanks Denny and Mickey, your advise was right on. It had a bad pump assembly. Though I was sure it was a good unit, the stator shaft was leaking. I din't reassmble this unit though, I put together another one and it's plowing snow today, dang spring snow stor...
1998 Mercury Grand Marquis LS 4.6L Surge, Cuts out, Stall, Misfire VIN: 2FAFP74W3W
I want to thank everyone for their input on diagnosing this car. I had to stop going any further because it still was doing the same thing. The customer stopped me from working on the vehicle and did not want to invest any more money. Trouble codes: P0304.
1996 Plymouth Neon 2.0L transmission VIN: 23G3R42333
I noticed that the fluid had a alot of bubbles in it. the costomet had gotten a used transmission and we put it in and it fixed it. I have a feeling it was a bad pump.
1996 Plymouth Grand Voyager LE 3.3L Check Shift signal VIN: 1P4GP44R7T
I dropped the valve body and checked the "rooster comb" for damage= none found. Reinstalled the valve body, pan etc, before reinstalling the Park/Neutral Switch and PRNDL switch I pushed in on plungers several times by hand (someone had suggested that they mig...
1995 Pontiac Grand Am SE 3.1L No Start VIN: 1G2NE55M1S
Thank you all for the replies. I went through the 30 min learn process with the used ECU and the engine started and ran for about 10 min. It will start at times but never stays running. When ever it dies the injector grounds go away while the pulsed signal fro... Trouble codes: C0DE?.
1998 Toyota RAV4 2.0L Poor Idle Quality, Surge, Cuts out, Stall VIN: JT3GP10V8W
i found the customers artermarket iac was defective. i ordered a toyota iac idle dropped .notified customerand said did this fix cold start condition . i said u never told me that( after naw part car idled high. i stated u did not say that). found bad egr valv...
2002 Volkswagen Passat GLS 2.8L MIL Lamp on VIN: WVWRH63B12
I only recieved 3 replies & was not able to get customer to bring car back in & leave for an extended period of time. I do not think there is a reflash as Lou stated. I am not sure what Dave meant about a flow sensor in the front O2 sensor- it passed monitor t... Trouble codes: P1176, P2096.
2004 Volkswagen Passat GL 1.8L No Start VIN: WVWPD63B04
Hey guys, thaks for all the help, lots of good advice, the problem was actually tech error, the cam retard code and the computer locked code set us off the trail. we went back to the basics and found the fuel pump defective, it would pressurize, but would not ... Trouble codes: 16395 (spec not reached for cam retard), 16555 (short term fuel trim lean), 17536 (long term fuel trim lean), 17978 (control module locked).
2003 Volvo S60 2.4L No Start VIN: YV1RS61T83
The fix was replacing the fuel pump control unit, not the pump. I did not have use of VIDA or VADIS which could have narrowed it down, but my dealer contact says they have problems figuring these situations as well. I did remove the pump and bench test it, wo...
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