My 2002 Grand Am coded P0300-random multiple cylinder misfire. Does anyone know what causes this ?

Asked by Jan 06, 2015 at 05:27 PM about the 2002 Pontiac Grand Am SE

Question type: Maintenance & Repair

1 Answer

12,530

Lots of things. Check out the scottykilmer.com video on diagnosing random misfires.

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