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1991 Pontiac Grand Am 2.5L Misfire
Posted to GM Driveability on 5/17/1999

Miss on #1 and # 4 cyl.s at idle or high rpm does not mater changed coil,ignition module,wires plugs even crankshaft sensor . No vacuum leaks ,good vacuum. Good compression 185 lbs. each [...] fuel pressure checked all grounds. The only thing i noticed tha...

 
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car Vehicle Data

1991 Pontiac Grand Am

VIN 1G2NE51U5M
Engine2.5 L / 4 cyl
SymptomsMisfire
OccursAlways
Misc.4 Door
Message Closed

car Vehicle Data

1991 Pontiac Grand Am

VIN 1G2NE51U5M
Engine2.5 L / 4 cyl
SymptomsMisfire
OccursAlways
Misc.4 Door