F150 fuel pump?????

Sounds like the supply line broke. Like it's just circulating fuel within the tank. Can you see fuel hitting the ground?

I will check to see if there is any fuel hitting the ground. Just to clarify, when you turn the key on the fuel pump primes its self, then stops right? then of course when you start the engine the pump will run. on mine it doesn't seem to be priming it's self, like maybe it's out of gas, but I know there is gas in the tank.

That's how I always figured they worked. Never torn apart a Ford before. Do you have a port to hook up a fuel pressure gauge? That way you will know if it's working.......

well I got ahold of a pressure gauge, and I have 44psi with the key on engine not running. Fuel pump is still running all the time

Well the only thing I can think of is the fuel pump relay is stuck in the closed position, which makes continuous contact, causing the fuel pump to remain on. Have you tried replacing that yet?

that model has a fuel pump mounted on the frame on the drivers side, rear tank has a pump inside the tank, i am not sure but i think that truck has 2 or even 3 relays for the fuel pump's i would 1. check for fuel leaking, all area's. (if no leaks are found) 2. check for a bad (stuck) relay. each relay has a fuse, if you have an owners manual they may be located, if not look on line at a wiring diagram for your truck. >stuck relays are common in older year model's< age and use--wear ,tear, and HEAT get to relay's as they age. always use safety Gear, Good Luck, Mike