Fuel pump or fuel pump relay switch
So here is the deal my truck won't start. It's acting like shes not getting enough fuel. The motor turns over but will not fire. I drove it to school and back no problem. Then while at home I couldn't get it to start. Its done this 3-4 times before and has started after half an hour or so, until today where it will not start 5 hours later. I changed the fuel filter today and there was no pressure in the lines which makes me think its a fuel pump or the relay switch.
My truck is a 1999 F-150 5.4L, 139" wheel base, and the vin number is 2FTR18L8XCA16828 with close to 100,000 miles.
When I turned the key to the point just before the truck usually starts, I hear the fuel pump make some noise but still doesn't start.
I pulled the wiring harness to see if any juice was going to the tank and the only thing that had current was a single wire, just for a second.
I'm going to buy the relay switch for $15 tomorrow and see if that fixes the problem. If not, I have to spend $250 for a fuel pump that won't come in until Wed.
If anyone knows where this switch is located, please let me know. I am assuming that this is different than the fuel pump shut off switch which is located on the passengers side, up by where my right foot would rest.
Any help would be appreciated.
And yes, I have a full tank of gas.