* Fuel pump itself: It could be failing or burnt out.
* Fuel pump relay: This is an electrical switch that activates the pump.
* Wiring: A break or short in the wiring to the pump.
* PCM: The computer might be faulty and not sending the signal to the pump.
* Inertia switch: This safety device, usually located under the dash or in the engine bay, might have tripped due to a collision.
To troubleshoot, you'll need to:
1. Check the inertia switch: Locate it and reset it if tripped (it usually has a button to push).
2. Check the fuel pump relay: Locate the relay in the underhood fuse box (consult your owner's manual for its location) and swap it with a known good relay of the same amperage.
3. Check the fuel pump fuse: Also located in the fuse box, a blown fuse will prevent the pump from running.
4. Check fuel pressure: A mechanic or you with a fuel pressure gauge can check if the pump is providing adequate pressure. This is usually the best way to pinpoint if the pump itself is the issue.
5. Have the PCM scanned for codes: A diagnostic trouble code (DTC) scan from a mechanic or code reader can pinpoint electrical issues with the fuel pump circuit or the PCM itself.
Don't attempt to work on the fuel system if you are not familiar with automotive repair. Gasoline is highly flammable.
