Question about 1995 Chevrolet Monte Carlo

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Irratic idle my 1995 monte carlo ran great until i replaced the thermostat. Now it revs up to as much as 3000 rpms then drops off and dies. I can also smell a strong smell of exhaust as if its getting more fuel than air. I replaced the MAF, IAT sensor checked the engine compartment area for vacuum leaks and found nothing. What's frustrating is that all i did was the thermostat and once finished this problem was here the first time i started the car. It really makes no sense to me.

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Did you bleed the air out of the cooling system? They are bad for air locks, Also is the check engine light on? Sounds like maybe a sensor left unplugged

Posted on Dec 03, 2008


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