Question about 2000 Buick LeSabre

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My 2000 buick le sebre 3.8 won't idle a little slow to start hesitates on accell but rev's up

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Check in this order the throttle body (clean it), air filter (replace it) and clean/replace the Throttle Position Sensor and/or the Idle Air Control

Posted on Mar 23, 2011

  • mike mountain Mar 23, 2011

    If the fuel filter has not been replaced in a while and you run the tank kind of low sometimes, replace the fuel filter too.

  • joe kidrowski Dec 18, 2012

    there is apossability that you are having an issue with the plenum or upper intake manifoldwich gm made of plastic seems to crack just behind throttle body allowing antifreeze to enter the intake manifold so you might want to at least remove the throttle body and see if there is a crack in the bottom of the throat for the throttle body

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