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1996 GMC Jimmy 4.3L Misfire, MIL Lamp on
Posted to GM Driveability on 3/15/2010 23 Replies

We inherited this from another local shop... It seems to misfire mostly at idle raising the rpm to 2500 to 3000. Fuel pressure is within spec and doesnt drop off when the car is shut off. I haven't done an injector balance test yet. The misfire jumps to almost...

23 Replies Received (View Replies)

  Related Documents & Media  1996 GMC Jimmy

 
Message Closed w/Summary

car Vehicle Data

1996 GMC Jimmy

VIN 1GKCS13W6T
Engine4.3 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMisfire, MIL Lamp On
OccursHot, Under Load
Misc.Po 300

Trouble Codes

P0300Multiple Misfire Detected
Message Closed w/Summary

car Vehicle Data

1996 GMC Jimmy

VIN 1GKCS13W6T
Engine4.3 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMisfire, MIL Lamp On
OccursHot, Under Load
Misc.Po 300

Trouble Codes

P0300Multiple Misfire Detected