EGR Valve
WARNING: This page is about a different car, the 1995 Ford RV Cutaway, 1995 Ford Econoline, 1995 Ford Cutaway, and 1995 Ford Club Wagon. However, it is still accessible from the selected car via links, so may be relevant.
EGR valve is a vacuum-operated EGR. EGR flow is monitored by EGR Valve Position (EVP) sensor. The EGR valve is operated by a vacuum signal from EGR electronic vacuum regulator solenoid.