Question about 2001 Chevrolet Malibu

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My 2001 Malibu seems to have a throttle problem. It sticks at 1500 rpm when at a stop light and will hold at 42 mph when in motion. I had a fuel cleaning service done, tune up, intake gasket, fuel injectors, and radiator replced. People at Auto Zone said to spray carb cleaner on it. It seems to work but I have to do it about everyday. The problem seems to happen at 65 degrees or above. Any sugestions??????????

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  • Chevrolet Master
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Could be many things.First i would check the fuel pressure regulator.Take the vacuum hose off of the regulator and look for fuel then check air intake tube coming from air filter box to the throttle body if there is any fuel laying in these areas replace fuel regulator.If they check out ok then take idle air control valve off and clean it with a non-chlronated brake cleaner and a wire brush.If problem still exists clean mass air flow sensor with a non-chlronated brake cleaner only.Whenever a sensor is removed or replaced reset the computer by pulling the ECM fuse then put it back.If problem still exist replaced the throttle position and reset the computer.The brake cleaner is cheaper than buying new sensors but,the throttle position can not be cleaned only replace it if needed.

Posted on May 22, 2011

  • ak_1023 May 23, 2011

    Thanks guys if i have anymore questions about this i will get back with you guy. Thanks again for your help!!!!!

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  • Chevrolet Master
  • 4,977 Answers

Are you spraying it in the intake at the throttle valve.if so then you need to clean the throttle valve thoroughly front and back.have you checked the throttle cable for rough spots in it.its more likely its just a dirty throttle valve.

Posted on May 22, 2011

  • ak_1023 May 22, 2011

    I have been spraying the cable and where the cable hooks to the trottle body. where is this intake you talk of????

  • robert wales May 22, 2011

    i f you have been spraying the cable then you have a dirt or a worn spot either in the cable or the knob that the cable connects to.you also could have a problem where the throttle shaft rides in the intake manifold(throttle body)binding causing the throttle to hang open enough.the intake is were the air cleaner snorkel connects to at the motor.with the snorkel removed you can look inside the intake and see the throttle plate that the cable connects to.when you move the throttle with the cable you move the throttle plate inside the intake.this is the part that will need cleaning.assuming this is multi-point injection(one injector per cylinder).

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