Question about 1992 Ford F150 SuperCab
From a cold start it fires up does it thing then idles down and quits
Yep,pretty normal ,the idle air control is either really
dirty or bad,I'm thinking just dirty because it works when
first started. Just unplug the wire ,take the 2 screws out and clean
it with injector cleaner.(round cylinder,about 3 inches long)
Also pull the air cleaner tubes and clean the throttle blades as well.
Posted on Jan 06, 2013
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Posted on Jan 02, 2017
on newer trucks what might happen is the choke gets stuck making it idle high. start your truck and tap the gas a few times and see if it doesn't lower the idle. if so you need to clean the mechanisam so it will not stick again.
Posted on Aug 03, 2008
I had the same problem with My 1990 F150 300 6cylinder 4x4.....I cahnged all the same things you did, finally I sprayed a can of Gumout through the throttle body and it worked and ran great. Now I add fuel injector cleaner to the gas and a regular clean with the gumout and the problem has'nt come back. Good Luck to you and hope it works!
Posted on Oct 06, 2008
SOURCE: truck runs rough
Sounds like one of your chambers isn't firing. Run your car for a few minutes, shut it off then pull your plugs one at a time and see if one of them is wet. Might just need a new plug.
Posted on Nov 28, 2008
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