1998 Pontiac Grand Prix help

1998 PONTIAC GRAND PRIX
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EGGET
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  • 1 POST
Engine Performance problem
1998 Pontiac Grand Prix 6 cyl Front Wheel Drive Automatic

my car runs rough,the check engine light flashes code reader say multipule cylinder misfire the coil packs are all good
Nov 18, 2008 at 10:31 AM
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MMPRINCE4000
  • ✓Experienced Mechanic
  • 8,548 POSTS
Change plugs and wires, inspect plugs for gas/oil contamination.
Nov 19, 2008 at 1:00 AM
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