1992 Honda Civic idle air control valve

1992 HONDA CIVIC
266,000 MILES • 4 CYL • 2WD • MANUAL
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BOBBY43
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My car idles up and down while sitting still. what is causing this to happen?
Mar 12, 2009 at 3:48 PM
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F4I_GUY
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It is most likely your IACV acting up. I would recommend servicing it with throttle body cleaner before replacement of the part.

It may also be a vacuum leak or faulty FITV as well. Personally, I would remove both the FITV and IACV and give them both a very good cleaning with throttle body cleaner.
Mar 12, 2009 at 6:06 PM