My 1989 F250, 5.0 Liter won't stay running and after it dies it won't start again. I have tested both fuel pumps and they are running strong. Also, when it IS running there is like a miss with the motor, low and throttle response. I believe that there is a sensor bad, but I don't know which one it might be. I have checked the Fuel pump relay, the ignition module that is on the distributor, and changed the TPS (throttle Positioning Sensor). Does anybody know of a sensor that could be causing this truck to cut out and shut off, then not start again. If so please answer what and where is it?