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Old 01-21-2011, 12:34 PM
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Okiespaniels Okiespaniels is offline
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High fast idle sounds like a serious vacum leak. Start looking for cracked or broken hoses. I had a broken PCV valve hose that caused this on my truck. Couldn't see the crack because it was on the bottom back of the hose, so a normal inspection didn't catch it until I pulled it off.
Shooting a can of EFI or brake clean around the hoses might reveal it too.
Another cause if you don't have a TB spacer is a missing air cleaner to TB gasket It won't cause your high idle, but is very noisy.
Lastly since you have a FIPK, check to make sure a piece of the tube is not jammed in your throttle (butterfly) blades. Chunks have been known to break loose and cause sticking throttles

Last edited by Okiespaniels; 01-21-2011 at 12:44 PM.
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