Sebring LXI Sedan V6-2.7L VIN R (2002)
Fuel Pump Pickup Filter: Description and Operation
Fig.8 Fuel Pump Module
FUEL PUMP MODULE
The fuel pump module contains the fuel pump, fuel reservoir, level sensor, inlet strainer, and fuel pressure regulator/filter (Fig. 8).
The Chrysler fuel pump module is an in-tank unit with an integral fuel level sensor and pressure regulator. The pump is driven by a 12 volt DC
motor any time the fuel pump relay is energized. Serviceable components on the module include:
-
Inlet strainer
-
Fuel level sensor
-
Fuel Filter/Pressure regulator
The pump draws fuel through a strainer and pushes it through the motor to the outlet. The pump contains two check valves. One valve relieves
internal fuel pump pressure and regulates maximum pump output. The second valve, in the pump outlet, maintains pump pressure during engine
OFF conditions.
The fuel system use a positive displacement, gerotor, with a permanent magnet electric motor. This fuel system does not contain the traditional
fuel return lines. The regulator contains a calibrated spring which forces a diaphragm against the fuel filter return port. When pressure exceeds the
calibrated amount, the diaphragm retracts, allowing excess pressure and fuel to vent into the tank.
The maximum deadhead pressure is approximately 880 kPa (130 psi). The regulator adjusts fuel system pressure to approximately 400 ± 34 kPa
(58 ± 5 psi).
The inlet strainer, level sensor and fuel pressure regulator/filter are the only serviceable items.
