car rpms sometimes drop to zero then back up to1000 while stopped.

1997 ACURA TL
250,000 MILES
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LUNDSKI
  • MEMBER
  • 1 POST
sometimes engine will die mostly rpms flucuate -- no problem when accellerating or driving at normal speeds.
Feb 17, 2012 at 1:11 PM
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BILLYMAC
  • ✓Experienced Mechanic
  • 2,204 POSTS
Hi
I would have the vehicle scanned for codes probably has a iac motor malfuntioning. Thanks Billymac
Feb 17, 2012 at 1:17 PM
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KHLOW2008
  • ✓Experienced Mechanic
  • 41,812 POSTS
Seems the idle control system is nt working correctly.

Have the throttle body and IAC cleaned and retest.

If you have the 2.5L engine, check the valve clearances as well.
Feb 17, 2012 at 2:53 PM
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