Modular Fuel Sender Assembly

DESCRIPTION
The modular fuel sender assembly is attached to the top of the fuel tank, and extends from the top of the fuel tank to the bottom.

Fuel Sender Assembly Components
The modular fuel sender assembly consists of the following major components: a Fuel Sender Cover Assembly (1), Fuel Pipes (Above Cover) (2), a Fuel Pump (3), a Fuel Pump Strainer, a Fuel pump Reservoir, a Fuel Sender Strainer (4), a filter to reduce radio frequency interference, and a ceramic card Fuel Level Sensor Assembly (5).

The fuel level sender assembly consists of the float, the wire float arm, and the rheostat. The fuel level is sensed by the position of the float and float arm, which operate the 90 ohm rheostat. As the float position changes, the amount of current passing through the rheostat varies, thus changing the gauge reading on the instrument panel.







OPERATION
A high pressure twin-turbine pump is mounted to the fuel sender inside the fuel tank. A 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 fuel sender strainer to 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 and speed controller.