Fuel Pressure Control Solenoid: Description and Operation

Fuel Pressure Regulator Control Solenoid Valve:

PURPOSE
The Fuel Pressure Regulator Control (FPRC) solenoid valve controls the vacuum to the fuel pressure regulator, preventing percolation of fuel during idle, or after engine is started at normal operating temperature.

DESCRIPTION
Vacuum to the fuel pressure regulator is momentarily cut and fuel injection pressure is increased to 268.9-310 kPa (39-45 psi). Normal pressure in the fuel line at idle is approximately 207-248 kPa (30-36 psi).

OPERATION
Vacuum is restricted after the engine is restarted, or allowed to idle for approximately two minutes, with the coolant temperature above 70°C (158°F) and/or the intake air temperature above 20°C (68°F).