ok i have a 96 bonne se and i have horrible gas mileage, like 14 mpg and the car runs great. i have changed the plugs and wires and o2 sensor and still same mpg i am going to try fuel filter next, anyone know where its at on a 96 and maybe how to do it if its hard?

i have a 97 n the fuel filter is on the passenger side of the car right in front of the rear tire. shouldnt be too hard to change. theres a little clip on one side and a nut on the other. the side with the nut might be rusted shut so put some wd40 or liquid wrench on it and let it sit for awhile and it should come loose pretty east. i was going to change mine today but cant find the right size wrench so ima have to do it at school.

do u think that since my car is running great and still getting crap gas milege that my fuel filter might be bad???

usually when a fuel filter is bad/plugged, the car will have reduced power and sometimes it will have no power at all.

Does your car seem like it'* having trouble getting up and going?

what brand of o2 sensor did you install?

Bosch and our cars do not mix well at all...

What plugs did you install? Did you test your coils? https://www.gmforum.com/t278818/ What O2 sensor did you use? If Bosh, get a new one like this.
DENSO Part # 2344012
Front
$31.79$0.00This is at Auto Parts Fast at RockAuto

i got the denso o2 sensor denso wires and champion plugs no bosch anything i havent tested my coils but i will do that, wouldnt my car be running bad if they were bad though? my car gets up and goes great it actually sucks my car is running so good because where do i go from here after i test the coils?? and could i go to checker auto and they would test it???

You may need to look at driving style. Another thing that can cause low millage is ethanol in the gas. Winter blend gas will also cause a drop. I'm getting about 18 right now. In the summer I get about 25 to 28. Do you warm up the car before you leave? This will cause a big drop as well.

ya about half the time i do because i have a baby, maybe i will just get some sea foam and through it in the gas and see if maybe that improves gas milage.

Run 1/3 of the seafoam in a vac line, the other 2/3 can in the fuel tank. That may help a bit.