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Gas mileage has dropped off on your 2000 buick lesabre and is not idling real smooth what could be the cause?
Wiki User
∙ 15y ago
First make sure you have a clean air filter but I suspect you have a fuel sensor not working as well. When was the last time you had a tune up? Has your check engine light come on and if it has you need to get the codes read in your car's computer.
Wiki User
∙ 15y ago
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