If you suspect a fuel pump issue, the problem likely lies elsewhere:
* Fuel pump relay: This is a common point of failure. You might need to replace the relay. A faulty relay would prevent power from reaching the fuel pump.
* Fuel pump itself: The pump could have failed. This requires replacement.
* Wiring issues: A break or short in the wiring harness leading to the fuel pump could interrupt power.
* PCM issues: A problem with the PCM could prevent it from sending the signal to activate the fuel pump. This is less common but possible.
* Inertial switch: Some vehicles have an inertia switch (often under the dash or in the engine compartment) that cuts power to the fuel pump in a collision. This switch might have tripped and need to be reset (usually by pressing a button). While unlikely to cause a no-start *without* a collision, it's worth checking.
Troubleshooting steps:
1. Check the fuel pump relay: Locate the relay (consult your owner's manual or a repair manual for its location) and try swapping it with a known good relay of the same amperage.
2. Check fuses: Check the fuses related to the fuel system in the fuse box (again, your owner's manual is helpful here).
3. Listen for the fuel pump: When you turn the key to the "on" position (but don't start the engine), you should hear a brief whirring sound from the fuel pump. If you don't, the pump or its power supply is likely the problem.
4. Check the inertia switch (if equipped): Locate the inertia switch (if your model has one) and reset it if it's tripped.
5. Have it diagnosed: If you're not comfortable troubleshooting electrical issues, it's best to take your Explorer to a mechanic or auto parts store for diagnosis. They can properly test the fuel pump, relay, wiring, and PCM to pinpoint the exact cause.
In short: There's no switch to reset. The problem needs to be diagnosed to find the root cause of why your fuel pump isn't working.
