Coil pack

Asked by Jul 24, 2017 at 08:45 PM about the 1999 Pontiac Grand Am 4 Dr GT Sedan

Question type: Maintenance & Repair

Will a bad Coil pack cause my car to have a very
rough idle

2 Answers

74,095

Yes it will but change the plugs and wires while you are at it.

1 of 1 people found this helpful.
250,595

What are the fault codes?

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