Question about 2002 Pontiac Grand Prix

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Grand prix wont idle

Well i have a 2002 pontiac grand prix and one day it decided it doesnt want to idle...the air intake where the filter is was loose so i tightened it back on and it still wont idle it shuts off unless its 2000 rpm's or above.

what could be wrong and how do i fix it?

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There are 3 things that should be checked.
The idle air control valve (some call it a fuel bypass valve)
Throttle position sensor
and a fuel pressure test done. The idle air control is usually mounted on the throttle body, so is the tps which has a black plastic casing. good luck.

Posted on Jan 25, 2009

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