If you suspect a problem with your fuel pump, the issue isn't a switch needing reset, but rather a more complex problem that needs diagnosis. Possible causes include:
* Faulty Fuel Pump: The pump itself might be failing.
* Fuel Pump Relay: The relay that controls power to the pump could be bad.
* Inertia Switch: The Expedition *does* have an inertia switch (often located under the passenger seat or in the engine compartment), which cuts power to the fuel pump in a collision. This switch is usually reset by pressing a button. *Check your owner's manual for the location and resetting procedure*. If the fuel pump isn't working and the inertia switch is tripped, this is the most likely culprit.
* PCM Issues: Problems with the PCM can prevent the fuel pump from operating. This requires a professional diagnosis.
* Wiring Problems: A short or damaged wire in the fuel pump circuit can interrupt the power supply.
* Low Fuel Level: While obvious, make sure the fuel tank isn't empty.
Troubleshooting Steps:
1. Check the Inertia Switch: This is the first thing to check. Locate it (consult your owner's manual) and see if it's tripped.
2. Check the Fuel Level: Ensure you have enough gas.
3. Listen for the Fuel Pump: When you turn the ignition key to the "ON" position (but don't crank the engine), you should hear a brief humming sound from the fuel pump area (typically near the fuel tank). If you don't hear it, the problem lies further up the electrical chain.
4. Check the Fuel Pump Relay: Locate the fuel pump relay (your owner's manual or an online repair manual will help). You can try swapping it with a known good relay of the same type (be sure to note which relay you remove!).
5. Professional Diagnosis: If the above steps don't solve the issue, you'll need a professional mechanic to diagnose the problem using diagnostic tools to check for fault codes and test the fuel pump circuit.
In short, there's no simple reset switch. The problem is likely more complex and requires a systematic approach to troubleshooting. Always consult your owner's manual for specific information about your vehicle.
