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There are 3 (1 per 2 cylinders)if you have a 3.1 V6. They are under the exhaust manifold closest to the front of the car. Follow your plug wires and you will find them.

Chances are that you only have one defective coil so try to narrow it down by pulling plug wires at the coil pack while the engine is idling. The defective coil will have no effect when its' plug wires are pulled.

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โˆ™ 2015-07-16 19:21:59
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Q: How to fix coil pack on 1991 grand prix?
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