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2.9L & 3.0L V6 Tech General discussion of 2.9L and 3.0L V6 Ford Ranger engines.

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Old 12-22-2008
meangrean's Avatar
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Please HELP

Lately my 1998 3.0L has been idling really weird at some points, like ill be driving down the road and it will jump to 3000rpm when i press in the clutch and stay there until i come to a stop then it will only go down to 1500rpms and it will stop when i kill the engine then restart it or take it over 4000rpms... Any ideas on what it is??
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Old 12-22-2008
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Idle Air Control valve.. Dirty MAF sensor.. or you could just disconnect the battery for a couple of minutes and see if resetting the PCM helps.
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Old 12-22-2008
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Ok. Thank you
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Old 12-22-2008
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Ya my 98 3.0 was doin that for a while lol
I just cleaned the IAC valve and no problems!
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Old 12-22-2008
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My 2000 did that quite often before I changed the IAC, it was pretty annoying esp. with the loud exhaust. I tried to change gears real quick just to keep it from reving when I pushed in the clutch. Good luck, and let us know if it works for you.
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Old 12-22-2008
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ya i try to do that too. This may sound stupid but whats the IAC valve?
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Old 12-22-2008
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Idle Air Control. Basically when the engine isn't under load it adjusts the idle speed.
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