99 Grand am 19 miles per gallon
stepf22
07-17-2009, 05:24 PM
I have a 99 Pontiac Grand Am SE 2.4 and just recently it's been getting about 19 miles per gallon HIGHWAY! I'm used to getting 25 to 30 depending on how i drive. When i start the car it starts sorta rough but other then that there really isn't anything wrong w/ it that i know of. So any help would be great thank you.
goodoldpapa
07-17-2009, 09:13 PM
How many miles on your car and have you donee any recent maintenance such as Spark plugs, plug boots, etc?
xeroinfinity
07-18-2009, 06:55 PM
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.
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.
goodoldpapa
07-18-2009, 09:50 PM
x2. I just recently replaced my front O2 and got a 4-5 MPG increase.
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