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Old 11-11-2011, 04:25 PM   #1 (permalink)
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Exclamation IAC valve??

I have a 1988 Honda Civic. On cold starts the engine will race. After a few minutes, if I turn the key off and back on quickly before it dies the engine speed will drop. But sometimes it will die and I have to turn the key off and on sometimes several times before it will start. I have cleaned the IAC, but doesn't help.

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Old 11-11-2011, 07:38 PM   #2 (permalink)
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Sounds like your Fast Idle Thermo Valve (FITV) needs cleaning and adjusting. Start there.
What model Civic do you have, and what maintenance has been done so far?
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Old 11-11-2011, 07:46 PM   #3 (permalink)
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IAC valve??

I have the basic civic 1.5. I have cleaned the IAC and fixed the seals--could have been leaking. Seems to run better. How is the IAC different from the Fast Idle Thermo Valve (FITV) and how do you adjust it?
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Old 11-11-2011, 08:03 PM   #4 (permalink)
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...here's a IAC troubleshooting video:

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