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2000 Pontiac Sunfire bucking trying to maintain a constant

Tiny
BEPETRO
  • MEMBER
  • 2000 PONTIAC SUNFIRE
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 10,800 MILES
When trying to maintain a constent speed the car bucks not all the time though. When this happens the tack goes up a bit then back down. Replaced fuel filter, had fuel pump checked, plugs, throttle module, distrubutor.

Bill
Friday, October 2nd, 2009 AT 8:28 AM

2 Replies

Tiny
F4I_GUY
  • MECHANIC
  • 3,302 POSTS
Does it feel like the transmission is slipping?
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Monday, October 12th, 2009 AT 9:34 AM
Tiny
BEPETRO
  • MEMBER
  • 2 POSTS
No, when it bucks or lunges the tack goes up alittle then back to normal. It starts and idles fine. Runs good when you jump on it.
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Monday, October 12th, 2009 AT 10:53 AM

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