* Under the hood in the Power Distribution Box (PDB): This is the most common location. The PDB is usually a large black plastic box located near the battery. You'll need to consult your owner's manual or a wiring diagram specific to your Expedition's year, engine, and trim level to identify the correct relay. The relay may be labeled, or you might need to trace wires to confirm.
* Inside the passenger compartment fuse box: Less common, but possible on some models. Again, your owner's manual or a wiring diagram is essential for this location.
To find it:
1. Consult your owner's manual: This is the best place to start. It should have a diagram of the fuse and relay boxes, showing the location of the fuel pump relay.
2. Use a wiring diagram: A wiring diagram specific to your 2000 Ford Expedition will pinpoint the relay's location. You can find these online through various automotive repair resources (some may require a subscription).
3. Look for labels: Once you've located the fuse boxes, look for labels indicating "Fuel Pump" or a similar designation near the relays.
4. Use a multimeter (advanced): As a last resort, if you can't find it visually, you can use a multimeter to test relays in the fuse boxes to see which one controls the fuel pump circuit. This requires some electrical knowledge and caution to avoid short circuits.
Important Note: Before working with any electrical components, disconnect the negative terminal of your battery to prevent accidental shorts or damage.
