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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for December 17, 2006
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Open Help Requests for All Makes and Models
Help Request Answers
2001 Audi A6 2.7L Poor Idle Quality, Hesitation, Surge
We have this A6 that runs perfectly, except for about 15 seconds after a cold start. The engine starts and idles perfect for about 10-15 seconds, then for the next 15 seconds it loses power, misfires, and at times backfires through the intake. At first I thoug...
1988 BMW 635CSi 3.5L spark VIN: WBAEC8413J
vehicle died-owner cranked till starter stuck and burned.It would fire for a split second,but not run.Replaced starter and now cranks with no start,It will spark 1 time and no more while cranking.will not even attempt to fire.have fuel pressure if I jump relay...
2000 BMW 323i 2.5L Poor Idle Quality, Hesitation, Surge, Misfire, MIL Lamp on VIN: WBAAM3341Y
ONCE THE VEHICLE WARMS UP VERY SLIGHT MIS STILL EXISTS, BUT DURING WARMUP PROCESS STEADY MISFIRES AND CHECK ENGINE LIGHT COMES ON. i HEAR A VACCUUM LEAK, BUT CAN NOT FIND IT. i SOUNDS LIKE A CARCKED INTAKE MANIFOLD. Trouble codes: P0300 (random misfire), P0301 (misfire cyl 1), P1189 (air and fuel metering), P0173 (po305- misfire cyl 5), P0305, P0306 (misfire cyl 6)
1999 Buick Regal GS 3.8L Instrument Cluster VIN: 2G4WF5214X
Hi folks! This vehicle is a "sold unit" from a used car lot here in town. They picked it up at the auction so unfortunately I have no history on it. The Service Engine Soon and Traction Off lights are staying on continually with engine running. There are no dr...
2003 Chevrolet Silverado 3500 6.0L No Start VIN: 1GBJC34V63
Hi all, Thanks in advance for your brains.I am totally unfamiliar with this set up.The truck is a cab and chassis with dual tanks.I have no power going to either fuel pump and have checked fuses , relays etc.The relays are working but no power is getting sent ...
1996 Ford Windstar GL 3.8L Poor Idle Quality, Surge, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 2FMDA5146T
Dear Friends, this vehicle has cylinder #2 missing when the vehicle warms up only and I have checked every thing that I could think of and now need your help. Thanks in advance.
1999 Ford Contour LX 2.0L Engine VIN: 1FAFP6536X
First the story: This little car came in not running. It came from an auto sales dealer. Dealer states the original owner replaced the cylinder head (have no idea why), but he couldn't get the timing belt set right. I had never done a timing belt on one of the...
2000 Ford Windstar 3.8L Tail lights VIN: 2FTZA5442Y
The tail lights on this vehicle will periodically come on with vehicle off and kill the battery. It took a while, but I finally got it to act up and it is the tail lights coming on, not the brake lights. The REM is sending a ground signal to the brake light bu...
2000 Ford Focus LX 2.0L MIL Lamp on VIN: 1FAFP33P8Y
Initially pulled p0171 from vehicle w/ok drivability except idle dip occasionally when slowing, and little rough @ idle. Found Long term FT at +32% @ idle and off-idle within 10%. (seems like clear cut vac. leak !!??) Also found in data that eng temp low after... Trouble codes: P0171 (sys. lean bank 1)
2001 Ford Windstar LX 3.8L Poor Idle Quality, Cuts out VIN: 2FMZA51481
Engines still misfires, or bucks, or stumbles, (hard to describe),at idle and under load(mainly with TCC engaged), intermittently.Is not a constant miss when it occurs, will miss for a split-second at idle. Accels OK in first 3 gears , under hard accel.Be sure...
2003 Ford F-150 Lariat 4.6L abs VIN: 1FTRX17W43
truck has random abs pedal vibration when stopping, watching speed sensors I do not see a drop out, it usually occurs below 15 mph, it will last from 1 second to 3-4 second range, pedal does not drop, or truck drift to one side. I replaced rear sensor,as a gue...
2005 GMC Sierra 1500 5.3L MIL Lamp on
I have looked all over to find a TSB or info stating that aftermarket engine heater will cause a MIL on for coolant sensor. Our shop has installed over 5000 block heaters in last 3 yrs on a City contract to lower Emmisions on cold days. In the last month one o...
1990 Honda Accord DX 2.2L " S " Light on constantly VIN: 1HGCB724XL
S lite switch has continuity at shifter and at instrument cluster connector, no codes at TCM, grounded test terminal and found nothing, pulled instrument cluster and found a burned spot on circuit board- repaired and replaced capacitor as well...still no affec...
1996 Jaguar XJ6 4.0L starting VIN: SAJHN1744T
Hi and Help,we have a no start no starter operation,the vehicle came in with inop wipers,diagnosed and installed a new wiper switch,wipers work,engine would start but would not come out of park.Found that problem was sticky micro switch at shifter clicked it a...
1996 Jeep Grand Cherokee Laredo 4.0L Hesitation, Cuts out, Stall VIN: 1J4FX58S1T
I went to help a good friend and came a across a Jeep from hell. My friend who's the shop owner, who's motto is "We fix what others can't" I really got a problem child. When I looked at the data stream I didn't see anything out of normal, even when the bucking...
2000 Mercedes-Benz ML320 3.2L Hesitation, Surge, VIN: 4JGB54E1YA
the car idles ok, but when you try to accel. the engine some times wont respond, like you dont press the accel pedal, and some times goes up and down the rpm, this is intermiten,when is cold is more frequent, you heard back fire like the airflow meter is bad,t...
2003 Nissan 350Z Track 3.5L abs mbdule VIN: JN1AZ34EX3
2004 Subaru Forester XT 2.5L Unknown VIN: JF15G69674
Have a problem with 2-3 shift holds or hesitates on shift , does not slip. Shifts hard sometimes depending on throttle position, light throttle shrts hard but still hesitates or holds shift, causes car to slow as if band timing is off. Subaru has never heard ...

Fixes & Summaries for All Makes and Models
Fix/Summary Answers
2000 Buick Century Custom 3.1L Misfire, MIL Lamp on VIN: 2G4WS52JXY
34 replies WOW!!! with the majority of the replies having to do with the injector i sheduled the car for last week and as soon as it arrived i got an injector and gaskets. the car runs excellent.i did make mention to the customer that he should have an inj... Trouble codes: P0303.
1990 Chevrolet Camaro Iroc-Z 5.0L Cuts out, Misfire, Stumbles VIN: 1G1FP33F6L
Hi, I am closing this help request because of time. We are still working on this problem when we have time. It has been put on the back burner. What we have found so far is that the right bank of injectors are not firing. We have found that on pin 11 or 12 at ...
2000 Chevrolet Blazer LS 4.3L Temp VIN: 1GNDT13W0Y
I want to thank everyone who responded. It turned out to be the heater core. I just could not believe it until you guys kept telling me it was it. Every time I flushed it the core never had any chunks or anything unusual come out of it so I just could not thin...
2002 Dodge Ram 2500 5.9L Unknown VIN: 3B7KF236X2
Thanks to all who replied I would have never guessed this would fix it but hey. We replaced the ball and socket in the cardone joint in the front drive shaft and all is well noise gone.. Just to recap this had a rachet noise in 4wd with a slight load on the fr...
1999 Ford Windstar SEL 3.8L Misfire, MIL Lamp on VIN: 2FMZA5349X
This was a new one for me but as it appears a fairly common event on these Windstars. All the EGR ports were clogged except for #3 so all the egr flow was dumping into #3. This was why we had a good idle and cold running was much better that hot. I unplugged a... Trouble codes: P0303, P0171.
2003 Mercedes-Benz C230 Kompressor 1.8L Hesitation, MIL Lamp on VIN: WDBRN40J63
Thank you all for the help. Put aside the brick and using the X431 which I borrowed from a friend revealed P0172: System ran rich. There is a TSB related to the P0172: the fix is to remove the supercharge and replace the torn hose for the SAI, the hose is behi... Trouble codes: P1105 (manufacture code- see service manual).
1996 Nissan 240SX 2.4L MIL Lamp on VIN: JN1AS44D4T
Sorry I don't have a fix for this car. The customer needed his car back and has not returned. I feel he will still come back. I don't think we lost a customer. One of the replies said that Nissan vehicles have a problem with canisters deteriorating and sending... Trouble codes: P0443, P0446.
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