Slightly high idle
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Joined: Aug 2012
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Slightly high idle
Just got done timing the truck and I'm still idling a little high. Checked the TPS and its reading slightly high at idle; 1.2v. Is it possible someone may have messed with the idle set screw? Resistance at closed is slightly low too, 2.89k, but pretty much spot on at full open, between 340-350.
Lead Driver
Joined: Jul 2009
Posts: 6,477
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From: Sheffield, AL
My 1986 with manual transmission and DS2 conversion idles happily @ ~650 RPMs.
Does your truck still have the original computer controlled carburetor and ignition?
There should be a decal under the hood by the radiator support which has the factory recommended specifications.
Sorry, I just noticed that the OP has a 1989. mcarb80682, you might want to make your own thread so as to avoid confusion.
Does your truck still have the original computer controlled carburetor and ignition?
There should be a decal under the hood by the radiator support which has the factory recommended specifications.
Sorry, I just noticed that the OP has a 1989. mcarb80682, you might want to make your own thread so as to avoid confusion.
Last edited by 1986F150six; Sep 21, 2012 at 11:27 AM. Reason: Note of possible hijack
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