Fuel Pump: Description and Operation

FUEL PUMP

The fuel pump is mounted in the fuel pump module reservoir. The fuel pump is an electric high-pressure pump. Fuel is pumped to the fuel injection system at a specified flow and pressure. The fuel pump delivers a constant flow of fuel to the engine even during low fuel conditions and aggressive vehicle maneuvers. The control module controls the electric fuel pump operation through a fuel pump relay. The fuel pump flex pipe acts to dampen the fuel pulses and noise generated by the fuel pump.

FUEL PUMP MODULE

The fuel pump module consists of the following major components:
- The fill limit vent valve
- The fuel level sensor
- The fuel tank pressure (FTP) sensor
- The fuel pump
- The fuel strainer
- The fuel pressure regulator