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2003, 76k miles, 2wd 2.4L, 5sp


sometimes too slow idle, so its running rough, other times it's a fast idle, and sometimes it sounds about right idle speed. It never changes from one state to another while idling. It only changes after driving a bit and slowing to a stop, like from light to light in city driving. Ive even had it idling for up to ten minutes in my drvway and it stays steady whether slow, fast, or normal.


Actually the fast happens less frequently.


All vacuum hoses that I see are fine. Actually from the label in the engine compartment, it only has EGR vacuum hoses. Now I actually cant see the hoses where they enter the charcoal canister. There are two electronic (switches) in these vacuum hoses that I have not tested.


Any ideas?
 

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Mambeau / Admin
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47,700 Posts
Has the weird idling behavior been happening while you're using your air conditioning?

Have any codes been thrown?
 

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Crappy idle usually attributes to the IAC needing to be cleaned, MAF needing to be cleaned, or a front O2 sensor on its way out.

Rarer circumstances are a failing cam or crank sensor.
 
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