why is rpm droping once in a while?

1989 NISSAN SENTRA
75,000 MILES
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JOEG69
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  • 5 POSTS
89 nissan 1.6l 5 speed rpm drop once in a while an if ya feather gas comes right back anyone know why
Aug 14, 2012 at 5:10 PM
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ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
possible dirty throttle body. have someone check it to confirm

Roy
Aug 14, 2012 at 5:25 PM
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RASMATAZ
  • ✓Experienced Mechanic
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Last tune-up? Do this clean out the IACV-AAC valve and see what happens
Aug 14, 2012 at 5:28 PM
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JOEG69
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  • 5 POSTS
our u talking about the air idle control valve an it was recently tuned up
Aug 14, 2012 at 6:50 PM
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JOEG69
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  • 5 POSTS
was thinking of cleaning it but wasnt sure
Aug 14, 2012 at 6:51 PM
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KHLOW2008
  • ✓Experienced Mechanic
  • 41,812 POSTS
Yes, the Idle Air Control ( Auxiliary Air Control Valve as Nissan calls it) should be the thing to check. Cleaning it should solve the problem.
Aug 15, 2012 at 5:10 AM
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