The fuel pump relay location on a 1994 Chevrolet S10 Blazer with the 4.3L engine is typically in the underhood fuse block, often in a dedicated relay box. However, the exact location within that box can vary slightly.
To find it:
1. Locate the underhood fuse box: This is usually near the battery, often on the driver's side.
2. Consult your owner's manual: This is the best source for the exact location and diagram of the fuse box and relays. It will show you which relay is the fuel pump relay. Look for diagrams labeled "fuse block" or "relay panel."
3. Look for a relay labeled "FUEL PUMP" or with a fuel pump symbol (often a gas pump icon). Some relays might only have a number designation. Your owner's manual will correlate the number to the component.
4. If you can't find it visually, use a multimeter. With the ignition switched OFF, you can test the continuity of the relays in the fuse box to identify the fuel pump relay.
Important Note: Working with car electrical systems can be dangerous. If you're not comfortable working on your car's electrical system, it's best to take it to a qualified mechanic. Improperly handling relays or other electrical components could cause damage to your vehicle or injury to yourself.
