Question about 2000 Pontiac Bonneville
You could have something as simple as a loose vacuum line or you could have a problem with the ( IAC ) Idle Air Control Module. You can CAREFULLY spray carb cleaner along the lengths of vacuum tubing in short ( 1 second ) bursts - if the idle races, then look where you just sprayed for a loose , fallen off or cracked vacuum lines. If that doesn't work then you'll need to have the IAC checked to see if it's working properly - your local shop should be able to quickly check that for proper operation. If the IAC is bad, they are relatively easy to change - with the biggest expense being the part. It is also possible to clean out the IAC which may restore operation by removing the IAC from the intake system and blasting it out real good with carb cleaner, then re - installing the IAC and testing it by starting the vehicle. Hope this helps!
Posted on Nov 05, 2010
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Posted on Jan 02, 2017
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