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1993 Buick LeSabre Question: Excessive gas usage

 

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DNUZUM, Fairmont, WV, September 12, 2009, 17:15
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High idle on interstate, idle corrects after restart.

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  • Answer #1

    patrick mannion from Greg Solow's Engine Room, September 13, 2009, 13:17
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     Master

    Check out this government website
    http://www.fueleconomy.gov/Feg/noframes/10103.shtml
    Lost of things can contribute to poor fuel economy. Ensure your car has had basic maintenance (spark plugs, fuel filter and air filter). The oxygen sensor coolant temperature switch and air flow entering the engine are the three key inputs the computer in your car uses to trim and adjust the fuel mixture.

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