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idle problems still

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Old 12-12-2010, 01:58 PM
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Year: 1990
Model: Cherokee
Engine: l6 242
Default idle problems still

so still having a problem with a reasonable idle rpm

ive cleaned and replaced my IAC. and that solved my problem of the engine choking itself when in gear. now it idles at 500 in gear but when its in neutral/park its between 1100-1250ish.

any suggestions, ive heard mixed sides on replacing the Crankshaft positioning sensor.
Old 12-12-2010, 02:16 PM
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my dads bronco did the same,we just cleaned the throttle body and a new iac.....then it was fixed,check ur fuel pressure regulator
Old 12-12-2010, 03:12 PM
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Have you checked for vaccum leaks?

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