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Prev Professional Automotive Repair Technical Discussions for December 31, 2010
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Open Help Requests for All Makes and Models
Help Request Answers
2001 Acura MDX 3.5L Poor Idle Quality, MIL Lamp on VIN: 2HNYD18271
Customer complained of a rough idle hard start issue. Had p1607 ecm failure stored. reset pcm, problem did not return. Started vehicle this am. Very cold out. Idled fine but MIL on and AT temp light on. When raisng rpm at temp light goes off until returning to... Trouble codes: P1607
2001 BMW X5 4.4i 4.4L Exterior lights VIN: WBAFB33551
Ok This X5 Has been a nightmare from the start. It Came in with a no throttle response concern. After Chasing our tails for a while and replacing the Throttle module and the pedal assembly we opened up the DME to find moisture and damage due to corrosion. Repl...
2003 Buick LeSabre Custom 3.8L Cuts out, Stall
thanks to all in advance . loosing my hair here . car came in a few months ago for intermittent stall . crank sensor tested bad so replaced . car drove fine for a month . back again stalling on decell was customers description , while on test drive car bucked ...
1999 Chevrolet Silverado 1500 4.3L Interior VIN: 1GCEK14W3X
i have pulled my hair out on this one.truck came in with the battey going dead over night and the high beam ind. and the cruise light on ( truck does not have cruise on it ) when the key is turned off. I have unhooked everything that i can think of and still c...
2000 Chevrolet Silverado 1500 5.3L MIL Lamp on VIN: 2GCEK19T9Y
This one is killing me fellas. Originally came in with P0134 and I threw new upstream O2 sensors at it (bosch). That did not fix it so I followed mitchells flow chart and found that the PCM was bad. Got a brand new PCM and had it it programmed at the dealer pu... Trouble codes: P1134 (Ho2s bank1 sens1 transition time ratio)
1994 Dodge Dakota Sport 3.9L Leaks VIN: 1B7GL23XOR
This is mine and I,m tired of it.I've had over heating problems for some time.I use napa parts all over it,might be my problem,but some time ago,I had coolant in oil,so napa guy sold me some blue snake juice to seal head gaskets,I know thats no good,but it jus...
2000 Dodge Grand Caravan Sport 3.3L No Start VIN: 2B4GP44G5Y
hello all and happy holiday, have a van here that we put a timing chain in while resealing the cover. van ran fine before but now it will start and stall like theft. dealer says van has no theft system at all. when you crank it will start and stall and i will ...
1996 Ford F-150 XL 4.9L MIL Lamp on VIN: 1FTEF15Y3T
thanks for all your help in advance and Happy New Year This vehice is one of my very good customers. when vehicle has a hot soak maybe 15 minutes it will not start. it trys to start, but just stumbles. when it cools off it starts fine. to me it seems like a fu... Trouble codes: P0171, P0174
2001 Ford Escape XLT 3.0L Misfire VIN: 1FMYU03151
Check engine lite on. the first cat that was on vehicle when removed you could see the insides a fine metal dust. The compression on cly 4 only 125psi I know is not good, but why would it kill the cat, and make a miss fire on that bank? The other part that I d... Trouble codes: P0304 (cly 4 misfire.), P0305 (cly 5 misfie), P0306 (cly 6 misfire), P1157 (Ho2 b2 lean), P1157 (Ho2 b2 lean), P0122
2003 Ford F-350 Super Duty Lariat 7.3L Excessive Emissions VIN: 1FTSW31F13
vehicle came in customer complaint was high egt reading on gauge ,running rough ran dignostics found dtc for cyl balance fault on #3 and #8 check compression replace two injectors.truck runs fine passes all self test,but still has excessive egt reading under l...
2001 GMC Safari SL 4.3L gas tank VIN: 1GTDM19W01
Please see above
2007 GMC Envoy SLE 4.2L Stall, MIL Lamp on VIN: 1GKDT13S97
Please help. I have this Envoy that is kicking my rear. It sets a p060e after various driving times. Sometimnes as short as a few miles.Sometimes I have to drive it 40 miles. Last time the customer picked it up they drove it over [...]. When the code sets, ... Trouble codes: P060E
2003 Honda Element EX 2.4L drive line VIN: 5J6YH28573
Has a vibration at low speeds when turning sharp left that sounds like the drive line is vibrating. Am not sure if fluids in transfer case or transmission have been changed. but the noise sounds similar to a rear differential with posi-trac that has the wrong ...
2004 Infiniti G35 3.5L Clutch VIN: JNKCV54E54
I have an intermittent but frequent noise that should be a release bearing ( only with pressure applied to the clutch pedal). No noise with it released or in neutral. There were some in the help section that indicated bearing replacement didn't cure their nois...
2004 Jeep Liberty Sport 3.7L Misfire, MIL Lamp on VIN: 1J4GK48K44
Calling all Jeep and Chrysler techs. Thanks in advance for the replies. I have this Jeep that is setting a P0300, the first time it came in it seemed a little rough at idle but the misfire counters were not picking up any measurable misfire. The freeze frame d... Trouble codes: P0300 (Random Missfire)
2005 Jeep Grand Cherokee Limited 5.7L Shudder, Stumble VIN: 1J4HR58N85
I'm stumped on this one! This vehicle belongs to a very regular customer. She was nice enough to drop it off for the week end. So that I may diagnose an intermittent problem. The customer states: "car feels like it will die or stall when in heavy stop & go tr...
1998 Mazda 626 LX 2.5L stop lites VIN: 1YVGF22D5W
stop lites r inop,replaced stop lite switch n still inop at rear.only stop lites are affected all other lites r ok,fuses r good
2003 Mercury Sable GS 3.0L abs VIN: 1MEFM50U53
Regular customer complains of abs activating during hard braking. Road test revealed abs does activate even while traveling at 30 mph no skid just activation. IDS graph shows both rear wheels are slowing down about 3 mph faster than front. When abs is activati...
1999 Nissan Quest GLE 3.3L Lifters VIN: 4N2XN11T2X
This is our family vehicle which I am trying to fix between customers. Oil leaked out the back valve cover onto the exhaust pipe making several sensitive people sick. Now that I have the intake manifold and valve covers off I can see that on the rockers for 3...
1999 Oldsmobile Aurora 4.0L Not Sure VIN: 1G3GR62CXX
When cold has very high pitch whine.on idetifix they talked about pouring water on intake to see if pitch changees for the anti-backfire problem is i cant find that in all it the air ck valve or divertor vavle.i couldnt find any illistrations ...
1987 Pontiac Firebird Trans Am 5.7L Glass VIN: 1G2FW2189H
Here's hoping someone is still working and reading IATN this late in the year. I have this 87 TA that has a problem with the rear hatch latch not pulling down. We have power to the relay, the switch on the latch tests good. The problem is we have no wiring dia...
2004 Toyota Sienna XLE 3.3L small cable at middle of sliding door VIN: 5TDZA22C04
This is my daughters car and while on a trip to Phoenix the right side sliding door failed to close, the son in law closed it and they didn't use it any more. Once home I got it open manually with much effort and noise to discover the cable frayed! My question...
2006 Volvo XC90 2.5T 2.5L No Start VIN: YV4CY59256
Hello and happy new year! I did an engine swap on this Volvo this week. I must say that the job went rather well. Execpt now that everything is back together I have no Fuel. Does the computer need recalibrating? I had to remove the ECM to get the wiring harnes...

Fixes & Summaries for All Makes and Models
Fix/Summary Answers
1992 Chevrolet C2500 Cheyenne 6.5L Tps VIN: 1GCGC24F5N
I wanted to give the vehicle enough time to conirm that the "fix" was indeed valid, and it appears so. I ended up replacing the igntion switch (electrical portion). My reasoning, which turned out correct, was the PCM (actualy a TCM on this vehicle) would eith...
1995 Chevrolet Tahoe LT 5.7L Transmission VIN: 1GNEK18K3S
Once again I would like to thank everyone for their replies. Everyone who stated that the 4 wheel drive actuator was bad hit it on the head. It was weird because it showed as being an open [...] somewhere in the circuitry but after further investigation it d...
2002 Chevrolet Trailblazer EXT LT 4.2L 4wd VIN: 1GNDT13S72
the customer would not let us go any further and took the vehicle back due to possible cost involved.i believe tear down surgery was next , the noise seemed to be internal and deffinently load specific. the customer said she would bring it back when she saved ...
2001 Dodge Ram 1500 Truck 5.2L No Start VIN: 3B7HC13Y71
OK all the little blood vessels in my head are still intact and ready for the new challenges to come in the new year. Thank you to all who replied. We had 2 Problems/ technically 3. First the PCM that was installed is DEAD, will not communicate. Whether it was...
2005 Dodge Ram 1500 Truck Hemi Sport 5.7L engine oil pressure VIN: 1V7HA16D05
sorry about the long time to reply, after all it's christmas time. ok we tore this thing back down knowing for sure we would find a spun cam brg or 2,guess what! no spun bearings. upon further inspection we found 2 plugged oil passages, cleaned and flushed the...
2006 Dodge Ram 2500 Truck SLT 5.9L MIL Lamp on VIN: 3D7KS28C46
Thanks for all the help! Running the pressure is around 750 PSI. We recommended the customer take the truck to the dealer for the TSB update. There seems to be no indication that the sensor defective and there are no driveability problems whatsoever. Thanks ag... Trouble codes: P0191 (Fuel Rail Pressure Sensor Circuit Performance).
1976 Ford Mustang II Ghia 2.8L Carb VIN: T234567890
Thank you all for the great insight here. Lots of things to check. First I plugged all the vacuum ports on the carb including the booster. That got the idle down to around 1000. Then I began a basic idle tune and got it to around 900 to 950 very rough. I have ...
1994 Ford Explorer XLT 4.0L ign fuse VIN: 1FMD432X5R
all u folks r right on as ignition capacitor was the problem two r three of members hit right on the money.thanks to all for the info n happy new year
1994 GMC Jimmy 4.3L engine VIN: 1GKCS13W4R
2006 GMC Sierra 2500 HD SLT 6.6L No Start, Poor Idle Quality, Stall, MIL Lamp on
The connections to the computer were all loose. Went through and tighten each one. Took awhile but when done vehicle started and ran great. thanks for all the help. Trouble codes: P0090.
2003 Honda Civic LX 1.7L Starting VIN: 2HGES16503
We have fixed this vehicle. We are still waiting on the insurance company to pay the supplemnet so I am holding the vehicle hostage. The PCM failed,a replacement and reprogram all was well. Now the insurance company is trying to say it was not accident relate...
1995 Jaguar XJ6 4.0L Misfire VIN: JAJHX1746S
First off thanks to all who replied. brian from cali hit it right on the head this car had been to several other shops and someone had been in valve cover. sure enough they swapped #5 & #6 coil conectors. thanks again.
2000 Jaguar Vanden Plas 4.0L heating system VIN: SAJDA24CXY
thank you everyone, after reading the replies and doing some more research, the problem was the aux pump. i checked the fuse to it and it was blown.the pump still would not run so i took it out and fed it power direct from a battery. no movement. hit it with a...
2003 Kia Sorento LX 3.5L Poor Idle Quality, Hesitation, Cuts out, Stall, Misfire VIN: KNDJD73393
In the end, re-examination of timing showed its was actually 6 teeth off. Could not believe it was still running under these conditions. Thank you for all your help. You all steered me in the right direction.
2003 Kia Sorento EX 3.5L No Start VIN: KNDJC73343
Thank you all for the help I replaced the temp sensor for computer because this vehicle only acted up once in a while I let the customer take it and have not heard back I assume it fixed it. Thank you again if It comes back I will repost
2004 Lexus LS430 4.3L day light VIN: JTHBN36F04
Thanks to all for your precious time to help me out, customer told me that he'll be back by next week or so, and i got good info from u guys, i am using X431 scanner couldn't be able to close with that so i'll take the relays out, even turned off the switch sa...
2002 Mazda Protege5 2.0L A/C Compressor/Blend Door VIN: JM1BJ24642
The vehicle is not yet fixed. However, I did locate a bunch of after-market wiring from a enhanced stereo system. I am all most positive that this is likely causing the electrical problem. I am going to remove all of it and restore all components to factory. t...
1999 Pontiac Grand Am GT 3.4L cooling system VIN: 1G2NW12E1X
Thanks for all the help guys lots of great info on this car on how to bleed this system. I figured this car out at home last night by going over in my head that the fix for this car was in the fact that it was not building pressure. What is needed for the car ...
2007 Toyota Corolla LE 1.8L hard start VIN: 2T1BR30EX7
After a discussion with the customer he is taking the car to the Toyota Dealer.Thanks to all that replied to my request. Thomas [...]
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