idles roughs and sometimes idles real fast whether cold or hot engine.
May 1, 2008 at 2:51 PM
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BLACKOP555
CAR REPAIR CONTRIBUTOR
10,386 POSTS
i would suspect a vaccum leak or maybe a sticky EGR valve since its only once in a while the high idling.
if those all check out good check the pcv valve, if its good it should rattle.
if all else fails probably a dirty throttle body or bad IAC module.