Frustrated

2004 PONTIAC GRAND PRIX
73,000 MILES • 6 CYL • FWD • AUTOMATIC
Avatar
JIMBOHONCH
  • MEMBER
  • 1 POST
2004 grand prix. P0300, overheating, white smoke from exhaust, slight hesitation during acceleration for 10min, after 10min becomes severe with whirling noise (not supercharger). dealership replaced one ignition coil, spark plugs, and cat is not the issue. second time they've tried to fix it but I guess they forgot to check after installing new part.
Dec 10, 2010 at 2:51 AM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
Advertisement
Avatar
FIXITMR
  • CAR REPAIR CONTRIBUTOR
  • 9,990 POSTS
white smoke is usually steam or raw gas. overheating would point to steam. losing anti freeze? maybe bad head/intake gasket? cracked head?
Dec 10, 2010 at 5:10 AM
Advertisement
Avatar
FIXITMR
  • CAR REPAIR CONTRIBUTOR
  • 9,990 POSTS
P0300 random misfire. if steam out back should drip more water from pipe than usual even after warm.
Dec 10, 2010 at 5:13 AM