Thread: 99 Grand am 19 miles per gallon
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Old 07-18-2009, 05:55 PM
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xeroinfinity xeroinfinity is offline
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Re: 99 Grand am 19 miles per gallon
Welcome to AF stepf22 !!

Thats horrible gas mileage! If you have close to or over 100k miles, replace your O2 sensors, that should greatly improve mpg as would a tune up if it hasnt has one recently.
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1999 Grand Am SS 3.4 OHV
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