Pontiac Grand Prix Problem Report

Pontiac Grand Prix Corrosion At Ignition Coil Towers

(13 reports)

Corrosion may develop at the connection between the ignition coil tower and spark plug wire resulting in an engine misfire. The Ignition coil and spark plug wire should both be replaced to correct this condition.

Vehicle would misfire between 1500 and2000 rpm with the gas pedal position held at a cruising speed. Two ignition coils each had one terminal with excessive corrosion. Replaced both coils and the plug wire set. -
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