Hi . New to the forum. I have a 2000 Grand Prix GTP that will start and run for a few seconds and then shut down. I have changed the fuel filter, I had a spare main computer I plugged in no change. The can definitely has fuel pressure, reads around 52 psi with short runs. Going to change the Crank Shaft Sensor next. I am looking for any other items that could be causing my problem. Thanks in advance.