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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for October 24, 2004
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Open Help Requests for GM
Help Request Answers
1998 Buick LeSabre Custom 3.8L Misfire VIN: 1G4HP52K7W
Hello everyone and thanks in advance for any help. I have a 98 LeSabre with cylinders 3 & 4 misfiring like crazy. No other cylinder is affected. Replace spark plugs, plug wires, ignition module, pcm, had injectors rebuilt, replaced ignition coils, map sensor, ... Trouble codes: P0300 (Random Misfire)
2001 Buick Regal LS 3.8L Ignition Lock Cylinder VIN: 2G4WB55K71
Vehicle was in for intermittent DTC #P0440. All that was replaced was the fuel tank pressure sensor. Customer returned about two hours after picking up vehicle and said that she could not remove the key from the ignition lock cylinder. The key would rotate for...
1995 Chevrolet Lumina APV 3.1L No Start, Cuts out, Stall
Vehicle starts and stalls. Runs rough with foot on pedal to keep running. Can see fuel coming out injectors while cranking and have lots of spark. Do these vehicles have problems with the TBI assembly?, ECU, spark timing? Any help would be appreciated.
1996 Chevrolet Lumina 3.1L suspension VIN: 2G1WL52M4T
Vehicle makes a snapping cracking noise on engine accel. or decel. also sometimes makes the same noise going over bumps and when braking. I checked and tightened the torque struts on the engine , wheel bearings, subframe and rack and all suspesion bolts thanks...
1996 Chevrolet Blazer 4.3L MIL Lamp on VIN: 1GNDT13W8T
Vehicle sets multiple missfire code but I can never feel a missfire. I can test drive with the missfire graph pulled up on the tech 2 and see the missfires stack up on #3 and #6 cylinders but only when engine is at 1700 rpm give or take 25 rpm. Back in the sho... Trouble codes: P0300
2000 Chevrolet Prizm 1.8L Poor Idle Quality, Stall VIN: 1Y1SK5288Y
Hello fellow Chevy/Toyota Techs! Here is what I've got. The vehicle will intermittently stall and has had a idle problem before. I can see the idle screw has been played with. It will restart right away and be ok for awhile. Most of the time it is cold. I have...

Fixes & Summaries for GM
Fix/Summary Answers
1999 Chevrolet K2500 Suburban 7.4L Poor Idle Quality, Hesitation, Misfire VIN: 1GNGK26J5X
well thanks too all who gave a useful answer in helping out with this truck , customer took his truck on a small trip raceing his porche and when he came back claims it is somehow now so small he is going to live with it untill it gets to be more of a problem ...
1998 GMC K2500 Sierra SL 7.4L Heater core VIN: 1GTGK29J8W
Thanks for all your help. I found the restricter hole in the fitting at the intake to the core was worn to twice it's original size. Therefore allowing too much volume to the core. I found it by squeezing the hose while goosing the engine, it got very hard. I ...
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