Question about Cars & Trucks
Run the fault codes and look for faulty MAF/VAF sensors and ambient temp sensors.
Posted on Nov 12, 2014
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Posted on Jan 02, 2017
Have a mechanic take a look at your throttle position sensor and engine idle sensor. Make him manually adjust them as opposed to just putting in new ones. It may require that you have to have a higher idle than normal. Your underlying cause is going to be that I am sure you have a lot of miles on your engine.
Posted on Jul 20, 2009
try the spark plugs do you smell fuel you may want to try starter spray make sure battery is fully charged.write back well try something else good luck thanks
Posted on Nov 29, 2009
SOURCE: My 2004 Grand Prix GTP
The usual cause for this problem is the IAC valve. It gets carbon buildup on it that becomes sticky when it is hot, such as after reaching normal operating temperature.
Carefully remove the valve from the throttle body, paying close attention to where the rubber o-ring is...it may come out with the valve or it may stay seated to the valve mounting hole. Either way...don't lose it.
On the valve is the pintle that sits in the throttle body air path, allowing or restricting air intake when your foot is off the pedal...if it is stuck, then pushing the pedal is the only other way your engine can get air.
Use a tooth brush and brake cleaner or throttle body cleaner on the IAC valve and inside it's mounting hole. Carbon buildup in this area is completely normal, however, running premium fuel and keeping a clean air filter will help the engine keep the right air to fuel mixture and minimize the problem...and save your starter too.
Posted on Oct 10, 2010
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