Galant VR4 AWD L4-1997cc 2.0L DOHC Turbo (1992)
Fuel Pressure Control Solenoid: Description and Operation
Fuel Pressure Control Solenoid Valve, Location
PURPOSE
The Fuel Pressure Control Solenoid Valve provides vacuum to the fuel pressure regulator. The regulator is used to increase fuel pressure. This helps
prevent fuel vaporization in the fuel line thus maintaining idle stability in hot start conditions.
LOCATION
Located on the firewall.
DESCRIPTION
The Fuel Pressure Control Solenoid Valve is a computer controlled, solenoid operated, vacuum shut-off valve.
OPERATION
Under normal operating conditions manifold vacuum is applied to the fuel pressure regulator, this allows the regulator to control fuel pressure/manifold
pressure ratio (to ensure precise fuel metering). When the engine is started at high coolant temperature or at high intake air temperatures, the ECU
grounds power thru the fuel pressure control solenoid to power the valve. This opens the valve and applies atmospheric pressure to the fuel pressure
regulator.
