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1998 Pontiac Grand Prix GTP 3.8L Misfire, MIL Lamp on
Posted to GM Driveability on 3/8/2004 15 Replies

Vehicle presents with a misfire noticeable on accel, MIL is flashing rapidly and misfire counter is counting in the thousands on cylinder 3. We first replaced all old {and they did look extremely worn}spark plugs with Ac-Delco double platinum. No change. We re...

15 Replies Received (View Replies)

  Related Documents & Media  1998 Pontiac Grand Prix GTP

 
Message Closed w/FIX

car Vehicle Data

1998 Pontiac Grand Prix GTP

VIN 1G2WP5217W
Engine3.8 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / SUPERCHARGED SEQUENTIAL PORT I
EmissionsOBD-II Compliant
SymptomsMisfire, MIL Lamp On
OccursAlways, Under Load, on Accel

Trouble Codes

P0300Multiple Misfire Detected
Message Closed w/FIX

car Vehicle Data

1998 Pontiac Grand Prix GTP

VIN 1G2WP5217W
Engine3.8 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / SUPERCHARGED SEQUENTIAL PORT I
EmissionsOBD-II Compliant
SymptomsMisfire, MIL Lamp On
OccursAlways, Under Load, on Accel

Trouble Codes

P0300Multiple Misfire Detected