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Prev Professional Automotive Repair Technical Discussions for May 21, 2006
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(Also Available: All, Asian, Chrysler, European, Ford, GM.)
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Open Help Requests for GM
Help Request Answers
1997 Cadillac DeVille 4.6L axle-whl.brg. VIN: 1G6KD54YOV
car has aclicking noise in the front,just like cv axles make when bad.However, will only do it when in a coastdown or deceleration,speed 20-50 mph,& only if steering wheel is turned to the right.will not do it below 20 mph,& only on decel,just slight movement ...
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1999 Chevrolet Tahoe LS 5.7L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GNEK13R7X
Engine misfires at idle does not misfire [...] rpm. fuel pressure is below spec. , but pump was previously replaced. Compression checks out ok at all cyls. Removed the egr cleaned the pintle and passage. The #3 cyl acted up during an injector balance test.... Trouble codes: P0304, P0300
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1992 Oldsmobile 88 Royale 3.8L Surge, MIL Lamp on, Spark Knock VIN: 1G3HN53L7N
This car runs well until the lockup converter engages in 4th gear and you will feel a steady jerk on light throttle. If you lift off the throttle or give it more throttle it runs great again. I also noticed the engine knocks badly for a moment then surges, the... Trouble codes: 21 (TPS low voltage), 22 (TPS high voltage)
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Fixes & Summaries for GM
Fix/Summary Answers
1982 GMC C1500 5.0L Timing Problem VIN: 123456J789
Thanks to all of you! Checked distributor and was fine. Final fix...pulled the harmonic balancer and sure enough, could see where the balancer had been slipping internally. Put in new balancer, bought a bolt-on timing tab, and after setting timing, which now s...
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2001 Pontiac Montana 3.4L Cooling Systems VIN: 1GMDX03E01
thanks for the help guys. a reman pcm from the gm dealer fixed. now the fans come on at the right temperature and when the a/c is on. adrian.
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