Fuel pump circuit 03 expedition - 2003 Ford Expedition

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https://fuse-box.info/ford/ford-expedition-u222-2003-2006-fuses-and-relay

What's wrong with it ? Did you test the electrical circuit ? Fuel Pump Electrical Circuits Description and Operation What engine does it have ? 5.4 L or 4.6 L http://www.bbbind.com/free_tsb.html

Also check fuel pump relay and the inertia fuel shut off switch .

May have flowed into the EVAP system or charcoal canister and is causing a rich flood issue.

Could be one of any number of thing's , Did you check fuel pump pressure before replacing the pump ? Did you check the fuel pump relay circuit ? To see if the fuel pump is receiving battery voltage ? Here is a video on the subject ! You pump is computer controlled ! If there is nothing wrong with the fuel pump electrical circuit an has fuel pressure you could have a mass air flow sensor problem ! Fuel Pump Electrical Circuits Description and Operation

The R303 "fuel pump relay" is located in the passenger-side fuse panel. It is also a non-serviceable relay as it is built in the circuit board.

You'll have to start at the relay and check the circuits for a short to ground. Could be a faulty relay too.

check the fuse and fuel pump relay.if they are good then you will have to probe the fuel pump feed wire from the relay to the pump.also check the ground circuit for the pump.did you make sure the connection at the pump was clean and fastened securely

67sunbeam, this is a rather complex system. The actual fuel pump,relay is located in the central conjunction box which is located behind the left kick panel. IT IS NON SERVACEABLE according to Ford. There is an inertia switch inside the left rear cab corner near the bottom. Just push it into the relay, if it was tripped, it will click.There is a fuseable link in the engine compartment next to the battery on the engine side. Aside from that, the fuel pump it self could have connection problems and more. Beyond the simple things, unless you fix cars for a living, it may cost you more to fix it you self than to bring it to a pro.

Fuel pressure test , is there spark ? Videos on youtube showing how to check .

Check fuel pressure. You may have a partly pluged fuel filter or a weak fuel pump.