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Old 03-16-2008
Jeremy102579's Avatar
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I am: Jeremy Robinson
Join Date: Jun 2006
Location: North Tonawanda, NY
Vehicle: 1994 Ford Ranger X-Cab 4x
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sticky/hanging idle problem still......

i have posted in the past about this issue.

i have an idle problem on my 1994 xl supercab 3.0 4x4 stick shift with 168,000 miles.

when coming to stop, the idles sometimes sticks at about 1500 rpms and then come down sometimes. also when shifting and pushing in the clutch, the rpms jump slightly.

at first, i tried cleaning the iac valve and that did not do anything, so i bought a new valve the other day and installed it but the problem did not go away.

could it be the TPS or should i look for vacuum leaks?

i know the 2 big hose clamps from the motor to the airbox are tight so no leaks there.

i ave scanned truck with tool and got no codes.

any ideas or advice?


1994 Ford Ranger 3.0 Supercab 5-speed 4x4
173,000 miles"

No Mods..........STOCK!!!!!

2000 Honda Civic EX 5-speed Coupe
90,600 miles

No Mods..........STOCK!!!!!

2005 Kawasaki z750s 6-speed
8,500 miles

No Mods (yet) - STOCK!!!!!

R.I.P. Gerber

Last edited by Jeremy102579; 03-16-2008 at 12:23 PM.
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Old 04-02-2008
wydopnthrtl's Avatar
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I am: Rich B
Join Date: Dec 2005
Location: SE, Mi
Vehicle: 2006 FX4
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Was doing a search because I have a similar problem.

Since you replaced the IAC it's just about gotta be either a throttle plate not closing all the way or a vaccum leak somewhere. Something between the MAF and the intake gasket is letting air get by.

Another thing that is possible is a bad PCM temp sensor.

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