Pontiac Problems? Ask a Mechanic for Answers ASAP
I have been a professional master mechanic for over 35 years and am happy to help you with this.
In almost all situations like this, its a fault with what is called the IAC valve (idle air control)
Also, usually all it needs is to be taken off and cleaned out :-)
If it needs replaced they cost right around 75 bucks.
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I can send you a pic of it if you like...
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