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2003 Pontiac Grand Am GT 3.4L Misfire
Posted to GM Driveability on 6/26/2013 17 Replies

Misfire from all cylinders under light load, [...] rpm

Did basic checks of ignition system, plugs/wires - good

Swapped: ICM, EGR, 7X CKP, CMP, 24X CKP

Unplugged: TPS, MAF, EGR, 24X CKP

*Problem goes away with EGR and 24X CKP unplugged*

Dropped exhaust ...

17 Replies Received (View Replies)

  Related Documents & Media  2003 Pontiac Grand Am GT

 
Message Closed w/FIX

car Vehicle Data

2003 Pontiac Grand Am GT

VIN 1G2NV52E23
Engine3.4 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMisfire
OccursOn Accel,
Message Closed w/FIX

car Vehicle Data

2003 Pontiac Grand Am GT

VIN 1G2NV52E23
Engine3.4 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMisfire
OccursOn Accel,