bad idle ranger

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Apr 21, 2004 | 06:44 PM

bobstx96

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bad idle ranger

I have a 1996 4x4 4.o liter with 99,500 miles it idles rough even after i changed plugs wires and used fuel injector cleaner , what am I missing?

Thanks for your input.

Apr 21, 2004 | 07:16 PM

Ken00

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From: South Jersey

Have you changed the air and fuel filters? Also check for vacuum leaks.

Apr 21, 2004 | 07:27 PM

bobstx96

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air filter is new and i assume that since i have enough fuel pressure to run at highway speed i think it should be ok. is there a way to test for vacuum pressure loss?
thanks again.

Apr 21, 2004 | 08:12 PM

mrmcdb2005

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idle position sensor

take the idle position sensor of and clean it with some achol and q tips. it is on the top of the throttle body.

Apr 21, 2004 | 08:16 PM

CowboyBilly9Mile

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From: Eastern WA

Um, the IAC solenoid. I've found carb cleaner is quite effective for this.

Last edited by CowboyBilly9Mile; Apr 21, 2004 at 08:22 PM.

Apr 21, 2004 | 08:21 PM

bobstx96

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ok gentlemen I'll give that a shot ,
i appreciate it.

Apr 21, 2004 | 08:27 PM

bobstx96

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where is the IAC solenoid located exactly?

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Apr 22, 2004 | 07:52 PM

bobstx96

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OK , thanks , is there any chance it could be excessive carbon build up in the intake ?

Apr 23, 2004 | 05:55 AM

#10

CowboyBilly9Mile

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From: Eastern WA

Carbon build up should not cause poor idle.

Apr 23, 2004 | 10:15 AM

#11

CMazz

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Could be the screen on your fuel pump as well...not letting anough gas thru at idle speeds. It could also be your EGR Valve, buddy on mine had same type of prob on a 96 3.0L 4x4 and the EGR valve had actaully broken away from the manifold due to rust.