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This is definitely the problem: The coil is bad OR The module is bad. DO THIS: change one of the good coils with the bad, If 1 and 4 fire and the other two don't, Its the coil,,,,,,,,,, If they still don't fire, Its the module

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16y ago
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Q: Why doesn't my 1991 cutlass supreme with a 31 V6 fire on 1 and 4 what could be wrong?
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