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Engine spits and sputters under acceleration

Tiny
ARSNSQD20
  • MEMBER
  • 2002 PONTIAC GRAND PRIX
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 104,000 MILES
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
Saturday, January 1st, 2011 AT 12:47 AM

3 Replies

Tiny
FIXITMR
  • MECHANIC
  • 9,990 POSTS
So it runs good when NOT accelerating and while idling?
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Wednesday, January 5th, 2011 AT 8:18 AM
Tiny
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.
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Wednesday, January 5th, 2011 AT 8:38 PM
Tiny
FIXITMR
  • MECHANIC
  • 9,990 POSTS
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.
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Thursday, January 6th, 2011 AT 12:56 AM

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