Thread: F250 '90 Engine revs high at idle
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Old 01-27-2008, 09:32 PM
gtmud gtmud is offline
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Re: F250 '90 Engine revs high at idle
WHen you start the truck and it idles up, take a wrench and tap the side of the IAC,( a 3" long cylider looking thing with and 2 wire connector) its mounted on the T-body. It will cause your problem. IF after rapping it the idle changes, you just conformed your problem. Either that or look for a large vac leak.
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