2006 Chevrolet Cobalt Logo
Posted on Jul 01, 2009
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06 cobalt My idle keeps on going up and down between 500 and 750 rpms when I come to a stop. It hasn't shut off on me yet, but it seems like it is going to. Any ideas on what the problem could be?

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Anonymous

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Sounds like your idle air control valve is going out on you. The IAC is located on the throttle body which is where the air duct tube ends coming from the air filter. It is held on by a couple of screws and is easy to replace. Let me know if you have any questions. Thanks for rating my response and for using FixYa!

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  • Posted on Feb 17, 2013
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I had same issue with my Cobalt. Told to buy mass air flow cleaner and spray into throttle body while car is running. Follow the instructions above to access the throttle body. Was told to do this on regular intervals as part of my preventive maintenance every three months. Clean more frequently if in a dusty or dirty environment.

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  • Posted on Jul 01, 2009
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Check your air filter, and if you haven't change your fuel filter. Other than this you can run some fuel injector cleaner through the system. These should all start to help, if the problem persists have your fuel system pressure checked.

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After doing this, take a match and burn that f**ker..
Mine was doing the same thing, I burned it and blamed it on Islamic jihad to my insurance. Never looked back
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