* Under the hood in the fuse box: This is the most common location. The fuse box is typically located near the battery. Check the fuse box diagram (usually on the inside of the fuse box cover) to identify the fuel pump relay. Look for markings like "Fuel Pump," "EFI," or a similar designation.
* Inside the passenger compartment fuse box (less common): Some models might have it located inside the cabin, often under the dashboard.
To find it definitively:
1. Consult your owner's manual: This is the best source of information. The manual will have a diagram showing the location of all fuses and relays.
2. Look at a wiring diagram: A wiring diagram specific to your 1991 Montero model will pinpoint the relay's exact location. You can find these diagrams online (sometimes for a fee) from sites specializing in automotive repair information or at a parts store.
3. Use a multimeter: If you're comfortable with basic electrical testing, a multimeter can help. You can trace the fuel pump's power wire back to find the relay. However, this requires some knowledge of automotive electrical systems and caution is advised to avoid short circuits.
Remember to always disconnect the negative terminal of your battery before working on any electrical components in your vehicle.
