RAM 3500 Chassis Cab Truck 2WD L6-6.7L DSL Turbo (2010)
Fuel Inlet Metering Valve: Description and Operation
Fuel Control Actuator - Operation
OPERATION
The Fuel Control Actuator (FCA) is an electronically controlled solenoid valve. The Powertrain Control Module (PCM) controls the amount of fuel that
enters the high-pressure pumping chambers by opening and closing the FCA based on a demanded fuel pressure. When the FCA is opened, the maximum
amount of fuel is being supplied to the fuel injection pump. Any fuel that does not enter the injection pump is directed to the cascade overflow valve. The
cascade overflow valve regulates how much excess fuel is used for lubrication of the pump and how much is returned to the fuel tank through the drain
manifold.
An audible click from the FCA is normal when operating the key from the ON to the OFF position.
