rough idle 1993 5.8
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New User
Joined: Feb 2002
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From: victoria canada
rough idle 1993 5.8
posted before.. but im still having a problem and have taken to another shop that could not pinpoint it .when its cold starts and idles high @1200 but smooth,when warm idles rough sometimes .seems worse driving up to stop than if i just let it idle for 5 minites. shows no codes ,my question is would a bad idle air control do this and not show codes .any ideas would greatly be appreciated..thanks
Senior User
Joined: Feb 2002
Posts: 402
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rough idle 1993 5.8
It's pretty common for the IAC ports and the throttle body to get gunk in em.I would take off the throttle body and clean it out and see what happens.You can also test the TPS with a voltmeter.
Billy
Billy
