2000 toyota 4runner 2.7L. engine revs up to 1100 rpms in gear when at a stop

2000 TOYOTA 4RUNNER
11,500 MILES
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CLC
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high revs to 1100 rpms when at a stop, revs up tk approx. 1700 rpms when in park. I think its the idle air control, and the battery, would like your opinion please
thanks
Mar 29, 2012 at 5:37 PM
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FIXITMR
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could be. have you checked for vacuum leaks? any codes to read? how does battery apply to the diagnosis?
Mar 29, 2012 at 5:46 PM
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KORBINO
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The same thing started happening with my 2000 4runner and it turned out that the O2 sensor was faulty and needed to be replaced which happens to a lot of the 2000 model.
Hope it helps!
Mar 29, 2012 at 6:33 PM
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KORBINO
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And it also started happening right around 115k
Mar 29, 2012 at 6:34 PM
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CLC
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no check engine light or stored codes in history. if it was the o2 sensor i should have a check engine. i have not checked for vacum leaks but will. in other ideas would be appreciated
Mar 29, 2012 at 7:00 PM