Fuel Quantity Control Valve: Description
WARNING: This page is about a different car, the 2006 Dodge Sprinter. However, it is still accessible from the selected car via links, so may be relevant.
The fuel quantity control valve mounts to front of the high pressure pump and is controlled by the ECM. The quantity control valve assists in maintaining proper fuel quantity injected under all operating conditions. Fuel tank heat protection is also provided by the quantity control valve. The valve meters the exact amount of fuel to prevent excess heated fuel from returning to the tank.