2001 Chevy Cavalier, 2.2 L, 101,000 miles, starts and runs for 2 seconds. I wait to hear fuel pump charge up, crank and it starts right up but only runs for 2 seconds. Repeated many times but same result. I do not have a fuel gauge but suspected a fuel pressure regulator, so I installed a new one but did not fix the problem. Nuts! Help! I hope its not the fuel pump.