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

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Old 03-05-2010
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No idle unless i rev it

I have a 00 4.0 4x4. I have 162 on it. I have a problem when i start the engine and the idle does not idle right. It is at 600 yea 600 rpms. I can rev it sometimes and it will reset itself and idle fine. I have a couple ideas but not sure if they are right. I was thinking it was the TPS (Throttle Position Sensor) or the EGR which im guessing stands for (Electronic Gas Regulator) but not postive. Does anyone have any ideas if these assumsions are correct? Please help so i can fix it this W/e. Thanks Steve Martin.
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Old 03-05-2010
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its kinda hard to geuss. is the check engine light on? BTW, EGR stands for "exhaust gas recirculation"
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Old 03-05-2010
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It could be the IAC valve. BTW what is wrong with 600 rpm? I set mine to idle at 550 rpm.
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Old 03-05-2010
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Sounds like you have a sticking IAC or vaccum leak.
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Old 03-05-2010
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No check engine light. thanks for the egr info and where is the IAC located? I think in drive it idles at 8 with the brakes on in park it idles about 11 or 12. I take the 600 back. i checked and its actually 400. Thanks guys.
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Old 03-05-2010
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The IAC valve is located on the side of the throttle body.
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Old 03-06-2010
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ok thanks ill check in tomorrow morning.
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