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Old 10-27-2007, 01:05 AM
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i.a.c.

Is it common for the i.a.c. to wear out on an older 4.3 v6? If it goes how hard is it to replace or refurbish?
Thanks, Clint

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Old 10-27-2007, 07:45 AM
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It is common for them to get gummed up and need cleaned.It simply unscrews from the side of the throttle body.Has wires plugged into it and is a large size hex I think 1and 1/16. unscrew it and clean with carb cleaner reinstall.
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Old 10-27-2007, 07:53 AM
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Handle it carefully and don't disturb the pintle. And yes, they do wear out.
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Old 10-27-2007, 01:54 PM
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If you take the IAC off and clean it don't forget to clean the seat it seals on. Usually a Q tip will do the job if you can't get a fat finger in there.
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