Voyager V6-3.3L VIN G Flex Fuel (2000)
Fuel Pressure Regulator: Description and Operation
FUEL PRESSURE REGULATOR
Fig. 1 Fuel Pump Module
The fuel pressure regulator is part of the fuel pump module (Fig. 1). The regulator contains a diaphragm, calibrated spring and a fuel return valve.
The fuel system uses a nonadjustable pressure regulator that maintains fuel system pressure at approximately 379 kPa (55 psi). The spring pushes
down on the diaphragm and closes OFF the fuel return port. System fuel pressure reflects the amount of fuel pressure required to open the return
port.
The pressure regulator is a mechanical device that is NOT controlled by the PCM or engine vacuum.
