2002 Pontiac Grand Am Trying to find answers

2002 PONTIAC GRAND AM
140,000 MILES • 6 CYL • 2WD • AUTOMATIC
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MR.DOYLE
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  • 1 POST
My mother has a 2002 Pontiac Gand Am it has 140000 miles on it and the service engine light just came on. I had it on a computer and it says it's miss firing. My question is could it be the coil packs cause it has new wires and plugs?
Nov 25, 2009 at 5:13 AM
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JDL
  • ✓Experienced Mechanic
  • 16,098 POSTS
Welcome to the forum, what was the actual code? P0300 is random misfire, probably something common to all cylinders. P0301--P0306 that is a misfire for specific cylinder. It could be fuel-- spark-- just about anything.
Nov 25, 2009 at 5:46 AM
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