engine spits and sputters under acceleration

2002 PONTIAC GRAND PRIX
104,000 MILES • 6 CYL • 2WD • AUTOMATIC
Avatar
ARSNSQD20
  • MEMBER
  • 2 POSTS
my 02 grand prix gt spits and sputters under acceleration. i have just changed the plugs, wires and coil packs. my service engine light is not on
Jan 1, 2011 at 12:47 AM
Advertisement
Avatar
FIXITMR
  • ✓ASE Certified Mechanic
  • 9,990 POSTS
  • ASE Certified Mechanic
so it runs good when NOT accelerating and while idling?
Jan 5, 2011 at 8:18 AM
Avatar
ARSNSQD20
  • MEMBER
  • 2 POSTS
yes the car idles fine and revs good in park only does it during acceleration. i did also replace the fuel filter. could it be the maf, fuel pump or the catalytic converter.
Jan 5, 2011 at 8:38 PM
Avatar
FIXITMR
  • ✓ASE Certified Mechanic
  • 9,990 POSTS
  • ASE Certified Mechanic
you should have codes read anyway to see if anything shows. fuel pressure test would help too. check the MAF for dirtiness. clean if necessary. maybe also test TPS.
Jan 6, 2011 at 12:56 AM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
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.