1999 Pontiac Grand Am engine run ruff

Tiny
VERNON D SU
  • MEMBER
  • 1999 PONTIAC GRAND AM
  • 2.4L
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 80,000 MILES
Engine miss on nub 1 cell exhaust get redhot
Friday, July 25th, 2014 AT 10:44 PM

1 Reply

Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
Assuming you have already changed the plugs and verified that coils are good, a common cause of misfire on this engine is the plastic coil housing. That act as a distributor cap on this engine and crack internally.

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Saturday, July 26th, 2014 AT 2:38 AM

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