Campaign - Faulty Ignition Coil: Overview

91pontiac17

Number: 90-C-11 Date: 03/91


Subject: EMISSION CAMPAIGN - 90-C-11 QUAD 4 IGNITION COIL

MODELS AFFECTED: 1988-90 GRAND AM AND 1990 GRAND PRIX WITH 2.3L ENGINE (VIN CODE D OR A)


TO: ALL PONTIAC DEALERS

General Motors has determined that some 1988-90 Grand Am models and 1990 Grand Prix models equipped with 2.3L (VIN Code D or A) engines (options LD2 or LGO) may develop cracks in the case of the I.D.I. (Integrated Direct Ignition) coil at the high voltage terminals. As the cracks grow, external arcing occurs between terminals and/or teminal to coil frame resulting in intermittent misfire, rough idle, and ultimately a "no start" condition when the coil fails completely.

Dealers are to inspect the ignition coils, and, if necessary, replace coils as instructed in the SERVICE PROCEDURE section of this bulletin.