Mechanics

PONTIAC GRAND PRIX COIL PACK PROBLEM

1994 Pontiac Grand Prix • 140,000 miles

Rough idle, during acceleration it misses and chuggs, changed fuel filter, plugs, wires, and now coil packs, still same issue. Wont rev over 4k in park.3.1 v6
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Sparky97
March 18, 2013.



Scan for codes and check fuelpressure first. Shold be 41-47 psi fuel pressure.

Hmac300
Mar 18, 2013.


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