1. Open the hood of your 1994 Chevy Blazer S10 4.3L.
2. Locate the fuse box, which is usually situated in the engine compartment near the battery.
3. Consult the owner's manual or a Haynes repair manual to identify the specific fuse box location and layout for your vehicle.
4. Once you have located the fuse box, find the fuel pump relay. In some cases, the fuel pump relay may be labeled as "fuel pump" or "FP."
5. The fuel pump relay is usually a small, rectangular device with multiple electrical terminals.
Fuel Pressure Regulator:
1. Open the hood of your 1994 Chevy Blazer S10 4.3L.
2. Locate the fuel injection system, which consists of the fuel injectors, fuel rail, and various hoses and lines.
3. Follow the fuel line from the fuel filter to the fuel rail.
4. The fuel pressure regulator is typically located at the end of the fuel rail, where the fuel line connects to it.
5. The fuel pressure regulator is usually a cylindrical device with a vacuum line attached to it.
