ranger idle high and clunking in back - Ranger-Forums - The Ultimate Ford Ranger Resource

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Old 11-29-2011
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Join Date: Dec 2010
Location: St.paul,MN
Posts: 19
ranger idle high and clunking in back

well this just started when the weather up here in minnesota stays in the 30. I get out to my truck after work tonight jump in and i let it run for a minute before i take off the rpm were fine until i get to the light it stay at 2,500 Rpm then it will drop back to the oem rpm specs,then when i got home put in park the rpm shoots up to 3000 rpm and now it stays there! i check the throttle to see if it was sticking but no,what could this be? also the transmission seems to be slipping on its second shift (auto 5r55E)
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Old 11-29-2011
Join Date: Sep 2009
Location: Nor Cal
Posts: 34
how fast does it go? plugged exhaust/cats?
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