I have a 1987 Mazda Rx-7 non-turbo. It will start up fine but then stalls about 3 seconds after starting(revs up to about 2500). If I just turn my key on I do not hear my fuel pump kick on. If I jump the check connector(yellowconnector) I hear my fuel pump kick on. When I go to start the car the fuel pump also kicks on but once my key goes back to the run position my fuel pump stops. I have checked fuses, main relay, fuel pressure(with jumper wire). Any Ideas?

 

Did you check the Air Flow Meter?