2002 Oldsmobile Alero Doe Idle Speed 1100 Almost Stall Rpm Back Repeatedly Park

225,000 MILES
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ANONYMOUS
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  • 1 POST
why doe idle speed go from 1100 to almost stall rpm and then back up to 1100 repeatedly in park but not in gear? feathering the throtle will settle out idle speed until moving it to drive then back to park. it does this over and over until it stalls. other than that it runs out just fine.
Feb 19, 2013 at 4:18 PM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Try cleaning out the idle air control valve and see what happens-
Feb 19, 2013 at 4:33 PM
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