1995 Geo Tracker fluctuating idle

1995 GEO TRACKER
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MRC1
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Engine Performance problem
1995 Geo Tracker 4 cyl Four Wheel Drive Manual
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while the clutch is engaged and out of gear at the stop. the idle will fluctuate from 1500 - 2000 rpms. it does this all on its own as if i was reving the motor. other than fluctuating it also idles low, low enough to stall out. when i shift into gear and resume driving it stops until i engage the clutch again. seems like after its warmed up after a minute or so it does it most. thanks for the help
Jul 18, 2008 at 12:45 PM
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DOCFIXIT
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Clean the ISC located on the throttle body and clean the throttle plate. Remove the ISC and clean the passageways.
Hope this helps
Jul 18, 2008 at 1:12 PM