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1988 Chevrolet C1500 Cheyenne 5.0L Poor Idle Quality, Cuts out, Misfire
Posted to GM Driveability on 7/12/1999

The pickup backfires when the EST connector is plugged in and it doesn't want to run. We have tried 3 distributors and map sensor, oxygen sensor nothing seems to work

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car Vehicle Data

1988 Chevrolet C1500 Cheyenne

VIN 1GCDC14H3J
Engine5.0 L / 8 cyl / GAS
Trans4-speed Automatic
DeliveryFI
SymptomsPoor Idle Quality, Cuts Out, Misfire
OccursOn Accel, Idle
Message Closed

car Vehicle Data

1988 Chevrolet C1500 Cheyenne

VIN 1GCDC14H3J
Engine5.0 L / 8 cyl / GAS
Trans4-speed Automatic
DeliveryFI
SymptomsPoor Idle Quality, Cuts Out, Misfire
OccursOn Accel, Idle