soo this morning it was around 50 degrees out and i went to start my car and i turned the key to start it, it began to start for a split second and it shut off. But then i turned the key back and tried again and it started right up. It has happened twice today around the same temp. can someone tell me what may cause this to happen??

 

cam sensor, cranksensor, fuel pump, PCM, wiring, MAP sensor, battery, ignition switch, fuel, coolant temp sensor, and about a dozen more things may cause this to happen.

 

what would be a good way to check it out?

 

a scanner, a factory service manual and a multimeter electrical tester. I don't suppose you have access this stuff?