1999 Chevrolet Malibu Logo
Posted on Jul 29, 2008

Engine revving problem, 1999 chevy malibu ls 78k miles

When i am driving, my rpm's go crazy. car accelerates on its own thus making the brake pedal very, very stiff. when the car is acting up, if i put it in neutral, the rpm's can go as high as 2500 or so. no one has any idea what is wrong, and the problem is intermintent. help!!

  • npackman Aug 10, 2008

    I have the same issue....only happens occasionally tho. I have read the codes and the is nothing. My car is a 2000 model though

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  • Contributor 8 Answers
  • Posted on Jan 20, 2010
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Joined: Jan 19, 2010
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Mine was the idle control motor

A

Anonymous

We had a problem with a '99 Malibu that idled very fast occassionally.....the replaced the fuel positioning sensor

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