It happened all of a sudden this morning. Car will crank but will not fire up and run. If I'm lucky, I can press on the gas pedal and rev up the engine to keep it going. But as soon as I release it, car dies. Could this be fuel pump related? I tried looking for the fuel pump relay on the passenger-side foot well, underneath the carpet. I did not see any green plastic box. I also tried tapping on the fuel pump (located on driver-side, in front of gas tank?), but nothing happened. Any help or comments is greatly appreciated. Thanks.