IT sounds like a throttle position sensor (TPS) of a Idle Air Control Valve (IAC). Is the check engine light on?
Joe
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Monday, February 16th, 2009 AT 1:35 PM
RIVERBOAT
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Joe; TPS, MAPS, are new parts. Ck engine light does not come on. Used code analizer-showed no codes, then erased codes.
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Monday, February 16th, 2009 AT 5:12 PM
JACOBANDNICKOLAS
MECHANIC
109,640 POSTS
Hi:
Have you checked fuel pump pressure? Is power normal other than the surge?
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Monday, February 16th, 2009 AT 5:34 PM
RIVERBOAT
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Yes I have, and presure is normal
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Monday, February 16th, 2009 AT 5:38 PM
JACOBANDNICKOLAS
MECHANIC
109,640 POSTS
If the electrical end is good and fuel pressure is good, the only things left are a vacuum leak or catylatic converter may be plugging. Have you checked for these problems?