Alrights guys, well im stumped?? I don't know what this can be? let me start, its a 98 Civic dx. When my gas gets kinda low like a quarter of a tank left, the car starts sputtering like its running out of gas. When it clearly says I have gas. If i keep driving it will eventually die and sputter to the point where it seems like there is no gas, and i can barley go over 15mph. I replaced the fuel filter already thinking it was that. No. im thinking it might be the fuel pump. but if that was bad the car wouldn't start and wouldnt last that long when im driving but it only does this when the car has a quarter of a tank left. but if i keep it above that, it runs VERY smooth with no problems what so ever. maybe the gas gauge is messed up?? idk can anyone help me out? Thanks