PelsorMud

Lemme start off my saying I have no experience with working on a fuel system and minimally experience working on a trucks, still learning how work on my own rigs, with that being said here's my issue. About a month ago my truck quit running on me, luckily just right down the road from my house so I just towed it home with the jeep. Seemed like a fuel pump issue so I replaced the intake fuel pump in the rear (no front tank on the truck anymore, was absent when I bought the rig). Figured it was the fuel pump because previously the truck was requiring cycling the pump a couple times to start when it was cold. But now I have no power going to the pump, i have ran a hot wire to the pump to make sure it worked and it did. I replaced the EEC Relay and fuel filter as well.
Could this be a fuel pump relay issue? Or what else could cause this? At this point I've hit a dead end with what I think It is. Appreciate all the help!

Just call me Sean

iTrader: (1)

Your truck has two fuel pumps, three if you still had the other tank. Hopefully it was deleted right, could cause problems if it wasn't. Check the inertia switch, it's on the firewall inside above the brake pedal. Also check codes.

fltdriver

Do what Sean said, also can you hear the pump running when you turn the key? Did you check the connections? I'm assuming you have a good ground because the hot wire cycled the pump. Wouldn't hurt to verify proper voltage at the pump.

PelsorMud

It's not the inertia switch. No I can't hear the pump run because there's no power going to it.
Does the fuel pump relay effect power getting to the pump?

fltdriver

Yes, if you aren't getting power try swapping the relays with a working one from another component (if you don't have an extra laying around). If that still doesn't get power to the pump check the wiring for damaged wires.

PelsorMud

I have power going into the fuel pump relay both constant via the yellow wire and red when the ignition is on. However I have no power leaving the relay via the brown wire which goes to the inertia switch. Does anyone know where the ground wire for the fuel pump relay goes?
The truck will start and run when using a jumper wire from the red to the brown wire

fltdriver

Have you tried a new relay?

Just call me Sean

iTrader: (1)

Ground goes to the computer, it's how it turns on the pump.

PelsorMud

Its a brand new fuel pump relay. Maybe a bad part from the part store? Or do y'all think its the ground wire that goes to the computer causing it?