This is what happened. I filled my tank up with gas and as soon as I drove out of the gas station my car shut off. I restarted the car and the RPM needle was bouncing all over the place for a few seconds and then it was fine. A couple of days later i was driving on the highway when the needle started to act up. I pulled over in the shoulder and the car stalled out. Now my car does this everytime I drive it. I know it's a fuel problem but i don't know if it's just bad gas or something mechanical. I just changed the fuel filter yesterday and the O2 sensor last weekend. My dad said it could be electrical. I don't know? Can anybody help?