2.3L Engine
WARNING: This page is about a different car, the 2007 Ford Ranger. However, it is still accessible from the selected car via links, so may be relevant.
The 2.3L engine incorporates a stepper motor-controlled EGR valve which receives its signal from the powertrain control module (PCM). Engine coolant is used to cool the EGR valve. The EGR valve and stepper motor are serviced as an assembly.