Question about 2005 Chevrolet Impala

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I have a 2005 impala with a 3.4l engine. It has 82,000 km on it. I find it's very hard on fuel. I get 450km/tank driving around town.

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  • Chevrolet Master
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Have you changed the thermostat as these get tired over time and doesn`t allow the motor to get hot enough even though the temp gauge won`t show anything other than maybe a little lower temp.this tells the computer that its not at optimum temp and the computer changes the injector on time to a longer duration(more fuel used).also driving habits change without realizing it.you may need to actually check fuel mileage 2-3 times while paying attention to how the car is driven and speed.if there is more than one person driving the other person may have changed there habits as well.also winter driving will use more fuel than summer driving.

Posted on Apr 01, 2011

  • Gregory Hutt Apr 01, 2011

    I will change the thermostat and see if this makes a difference.
    Thanks,
    Greg.

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