The truck runs but will all at once cut off. Might wait 5 min. Then it will crank again. Sometimes longer. Ive already replaced: fuel pump, air, and oil filters, coil, cap, button, wires, plugs, pcv valve, and fuel pressure regulator. The problem seems electrical due to it just cutting off then restarting. But where to start? Someone told me change the crank position sensor..... idk... help!!!