Turns but do not start.
 

I have a 2001 Pontiac Grand Am SE it is not starting. It turns but does not start I have taken off the batt. term. still nothing. I checked the fuel pump & heared the pump when key is in the on position.
The security light comes on from time to time. When that happens most of the time the car will not start. But it will start maybe in two or three days on its own. Can you help me? e-mail bigtit28@hotmail.com[&o]