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#1
08-11-2011, 01:32 PM
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Idle Jumping up and down when hot
After running a few minutes the idle will jump from 500rpm to 1000rpm back and forth. I have already replace spark plugs, wires, MAP, and air filter. It also throws no codes...Can anybody suggest what this problem may be please...Thanks
update...changed the IAC sensor and cleaned out vacuum hoses and now it jumps up and down with the A/C being on...Anybody w/ suggestions? -Chris
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2002 Ford Ranger 2.3 Last edited by Chris Gue; 08-15-2011 at 10:36 AM. 
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#2
08-11-2011, 02:12 PM
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Re: Idle Jumping up and down when hot
sounds like the idle air control valve is bad
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1996 ranger with 2003 splash bed and 2010 front clip. Fully bagged and layed out. 4 link rear suspension . 18" wheels and alot more to do. Going to welding shop to get shaved up nice and clean.
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