Where is the fuel pump relay switch located on a 1992 ford aerostar?

The fuel pump relay location on a 1992 Ford Aerostar is in the Power Distribution Box (PDB), also sometimes called the fuse box under the hood. However, there isn't a single, universally labeled "fuel pump relay". It might be integrated into the larger PDB or it might be a separate relay within the box. You'll need to consult your owner's manual or a wiring diagram specific to your Aerostar's engine (3.0L V6 or 2.3L I4) to pinpoint it.

The owner's manual will show the layout of the PDB. The wiring diagram is crucial to identify which relay controls the fuel pump; it may be labeled as something like "EFI Relay" or similar. You'll find the diagrams online or in a repair manual.

To find it visually, follow these steps:

1. Locate the Power Distribution Box: Open the hood and look for a large rectangular box, often near the battery, that houses fuses and relays.

2. Examine the Relays: The relays are usually square or rectangular components with sockets. They might be color-coded (though this is not always reliable across years/models).

3. Consult your diagram: Use the wiring diagram to identify the correct relay based on the fuel pump circuit. A multimeter can help you test relays to confirm you've found the right one.

Without the wiring diagram, confirming you've found the correct relay will be difficult and require testing the circuit. Incorrectly swapping relays can cause damage.