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Old 13 Jan 2011, 12:01 am
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Default honda civic idle up and down?

my 1994 honda civic idle up and down after it warm up, but when i turn the a/c on it stop. i cleaned the iacv but i keep doing it...















any help thx
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Old 13 Jan 2011, 12:16 am
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Is this how you cleaned your IACV? http://www.honda-tech.com/showthread.php?t=1575913































Bleed your cooling system of any air. Air in the coolant will cause idle roaming/bouncing in Honda's.
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Old 13 Jan 2011, 12:31 am
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follow the above steps but if you have a vacuum leak that could cause it too(depending how drastic the idle is)
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Old 13 Jan 2011, 12:46 am
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You also may just need a new IACV.
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