Ok my truck wont start itll turn over no problem, and after a wile of trial and air i know its something to do with the motor not getting fuel the fuel pump is fine, filter still new, ALL fuses fine even the relays, the trip switch is fine,, So what hell else could it be, i have the fuel pump hot wired right now with a switch to get er moven again, But i still need to fix this and the only thing i can think of is the ECU but how can i test that