I believe that its some where in side the vehicle, and if not its inside the engine area
No , it's fuel injected
right hand side of motor on bottom in front of transmission .
belt
I think it is next to the starter solenoid close to the battery.
Could be bad gauge or float stuck in fuel tank
Aprox $500 parts and labor.
next to the driver side batter, a black and gray relay,is the fuel relay low volts will burn then up.or plug fuel filter..
gap is 42
Try Autozone.com
7.3 liter diesel
No , the Ford Expedition is a full size Sport Utility Vehicle where the Econoline ( E-150 / E-250 / E-350 ) is a full size VAN
Each fuse is labeled. If that vehicle actually has an electric pump, the fuse would be in the fuse box along with the others.