Fuel Pump: Description and Operation

A pressure roller vane pump is mounted to the fuel sender inside the fuel tank. The fuel is pumped to the engine at a specified flow and pressure through the fuel pump. Excess fuel is returned to the fuel tank by a return pipe. The fuel pump delivers a constant flow of fuel to the engine even during low fuel conditions and aggressive vehicle maneuvers.

The electric fuel pump operation is controlled by the Powertrain Control Module (PCM) through a fuel pump relay.

LEGEND
1. Fuel Sender Assembly
2. Fuel Level Sensor Assembly
3. Filter
4. Fuel Pump