hi everyone! I have a 1999 f350 with the 5.4l engine. I have no power to the fuel pump or fuel pump relay. I have battery voltage to the pcm relay. I don't know what else to test because I don't have a proper wiring diagram. if anyone can help let me know! thanks

 

That may be hard for you to troubleshoot without a wiring diagram, so that may be what you need to do first. Are you getting a fuel pump "prime" when you turn the key on? Have you checked for a blown fuse?

 

I don't have a blown fuse. already checked that. but that's why im trying to get a proper wiring diagram for it. bought a manual for the truck and it didn't come with a fuel pump diagram. so right now im stumped