If you're experiencing fuel pump issues, the problem is likely mechanical or electrical and requires professional diagnosis and repair. Possible causes include:
* Faulty fuel pump: The pump itself might be failing.
* Fuel pump relay: The relay that switches the pump on and off could be malfunctioning.
* Wiring problems: Damaged or corroded wiring can prevent the pump from working.
* Low fuel: Sounds obvious, but an extremely low fuel level can sometimes affect the pump's ability to draw fuel.
* Fuel pump fuse: A blown fuse can also stop the pump.
* Inertia switch: Some vehicles have an inertia switch (a safety device that cuts power to the fuel pump in a collision) that might have tripped. This is usually located under the dash or in the engine compartment. Check your owner's manual for its location.
If you're having fuel delivery problems, you should take your Expedition to a qualified mechanic for diagnosis and repair. Trying to "reset" something that doesn't have a reset is unlikely to help and could even waste time and potentially cause further damage.
