high rpm fluctuation

2003 CHEVROLET CAVALIER
92,500 MILES • 4 CYL • 2WD • AUTOMATIC
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BOHAIR
  • MEMBER
  • 10 POSTS
I have a 2003 Chevy Cavalier. While in park and pressing the accelerator gradually, the rpms fluctuate after reaching 4500 rpms. Once the fluctuating starts, it drops to 4000 then back to 4500 rpm over and over again and will not exceed 4500 rpm no matter how much the accelerator is depressed. Rpm does not fluctuate at any point less than 4000 rpm. A mechanic told me to change out the idle control but unfortunately the problem still exists. What suggestions does anyone have? thanks
Aug 12, 2011 at 5:45 PM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Go to this link for more information: https://www.2carpros.com/articles/engine-surges
Aug 12, 2011 at 5:53 PM
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DANLESABRE
  • MEMBER
  • 230 POSTS
That is normal. The car's computer is programmed to prevent the engine from over-revving.
Aug 12, 2011 at 10:23 PM
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BOHAIR
  • MEMBER
  • 10 POSTS
Thank you for the help
Aug 13, 2011 at 8:32 AM
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RIVERMIKERAT
  • ✓Experienced Mechanic
  • 6,106 POSTS
Happy we could help.
Sep 20, 2011 at 10:09 PM
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