I know a fuel filter/pump and the o2 sensor are just a few, my car is gettin TERRIBLE gas milage, sometimes I find myself at the gas station 2wce a day! I need to know what parts I will need to fix this immediately! it'* become'n too expensive.

It'* gotta be a leak, have you checked the mileage?

ken

The filter and pump won't affect your fuel mileage. They can't make you run rich, or 'waste' fuel.

O2 sensor, or an ignition problem. (ICM, coils, wires, plugs). You may also have very poor compression.

twice a day :o OUCH!! As in filling from empty to full??
I thought once a week sucked!!!

Assuming you don't have any trouble codes, I would start with the oxygen sensor. Does your exhaust stink like unburned fuel?

yup, now that U mention it, It does smell wierd.

Rotten eggs? Sulphur? This is either a sign of a bad O2 or a bad cat.

how much for the coverter? the o2'* nothin' it'* simple, I need to get all these things new just so I'll feel that much better I'll get the o2 replaced as fast as this weekend maybe the coverter too.

Oh, and yes it does smell like sulphur and rotton eggs and gas an.............

The oxygen sensor is cheap and easier to replace than the cat. You really need a lift and some welding tools to do exhaust work.

I would start with the oxygen sensor first.

Absolutely. I was just saying a Cat could make the same smell. But it can't affect your mileage unless it'* clogged. You would feel a lack of performance if that were the case.