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high idle issue

   
Old Jul 8, 2011 | 11:33 AM
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ffkill3rfc3s's Avatar
ffkill3rfc3s
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From: Jacksonville, FL
high idle issue
my 88 fc while constantly stays at 2k rpms. no vacume leak though. i was told it could be my iac valve or bac. any advice?
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Old Jul 8, 2011 | 04:39 PM
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RotaryRocket88
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Stuck throttle cable or someone has played with the throttle stop on the TB.
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Old Jul 9, 2011 | 11:02 AM
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I messed with the throttle to see what was up. Didn't have any play to it seemed normal. But I lift the throttle not even a cm. And the idle went to normal.
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Old Jul 9, 2011 | 12:24 PM
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Cars with cruise control also have a throttle cable that could contribute to high idle.
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Old Jul 9, 2011 | 12:56 PM
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Originally Posted by ffkill3rfc3s
Didn't have any play to it seemed normal.
the cable should have a little bit of slack in it.
But I lift the throttle not even a cm. And the idle went to normal.
then something isn't allowing it to rest on the stop.
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Old Jul 10, 2011 | 01:28 AM
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i dont have cruise control. ill check the throttle cable tomorrow again. i went ahead and ordered new hoses and im picking up a BAC off a dude here in town tomorrow to see if that works.
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Old Jul 10, 2011 | 09:56 AM
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An idle that high has always been a mechanical issue with the throttle body, in my experience. For example, the cold start cam could be suck. Or the throttle cable could be wrapped around the shaft, etc.
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Old Jul 10, 2011 | 09:58 AM
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ON 92 fast idle
My 92 had a fast idle problem when I bought it, but I just took it back to the shop where I bought it and they fixed it. Should have asked what they did.
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