Fuel Control Actuator Fuel Metering Valve 89458-60010 For TOYOTA. The Fuel Control Actuator (FCA) or Fuel Pressure Regulator is an electronically controlled solenoid valve. The ECM 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 overflow valve. The 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 to either the ON or OFF positions