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1996 Buick LeSabre Question: my buick uses alot of gas what could be the problem?

 

Question

dc12345, Ashland, OH, August 06, 2013, 19:27
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my buick gets about 15 miles to the gallon. i would like to know what the problem could be?

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  • Answer #1

    goodguy August 07, 2013, 02:49
     Master

    have you had a tune up recently?

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  • Answer #2

    pushrod August 07, 2013, 05:33
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     Master

    Specs: 3.8 L engine 17 city 27 hwy. Recheck mpg!
    Check eng. light on?

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  • Answer #3

    Greg's Orange Auto (13188 Answers) , Orange, CA - (714) 361-9386
    globalhelper August 07, 2013, 05:57
     Master

    have live data read for fuel trim issues and ck fuel pressure

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  • Answer #4

    sturdei August 18, 2013, 16:36
     Rookie

    My 1995 Buick Century did this when the thermostat failed and stuck wide-open. The engine would never heat up as hot as normal, and the heater would take forever to finally make warm air. It caused the engine to eat fuel like mad trying to warm itself up. Dropped from my regular 23mpg down to 13mpg. The only reason I noticed is that the temperature gauge was lower than normal. Changed the thermostat (took about 10 minutes) and the car heats right up properly and fuel mileage went back to normal.

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