Idleing problem??? - Ranger-Forums - The Ultimate Ford Ranger Resource


4.0L OHV & SOHC V6 Tech General discussion of 4.0L OHV and SOHC V6 Ford Ranger engines.

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Old 03-01-2009
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Idleing problem???

Every time I come to a light or stop sign I shift into neutral and my rpms launch up to about 2000-2500 rpms and if I leave it it stays there for about 30 seconds and then slowly comes down to regular...any ideas?? clean the MAF or something??
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Old 03-01-2009
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IAC or TPS
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Old 03-01-2009
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Definitely iac or tps, maybe throttle body.
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Old 03-01-2009
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i got some connecter cleaner...where are both of those at?
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Old 03-02-2009
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anybody??
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Old 03-03-2009
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Not familiar with the ohv, but the iac is the little football-shaped, mini keg looking thing on your manifold. The tps is on your throttle body. I would go ahead and clean all three - maf, tps, iac.
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Old 03-03-2009
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My first guess would be the IAC as well.
On my 06 the IAC is on the drivers side right behind the throttle body.

If the rpms come down to normal.. then I'd definately guess the IAC. But if they don't come down all the way.. it might be a vacuum leak that the IAC is trying to account for.

Also, it's unlikely.. but I have seen a bad temp sensor cause very high idles too. (the pcm temp sensor.. not the guage one)

Rich
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