EGR Valve Position (EVP) Sensor/EVR Solenoid
WARNING: This page is about a different car, the 1995 Ford Aerostar. However, it is still accessible from the selected car via links, so may be relevant.
Faults in sensor or circuit should set a diagnostic trouble code. See QUICK TEST in TESTS W/CODES - EEC-IV (3.0L) article. If no diagnostic trouble code has been set, see CIRCUIT TEST DN in TESTS W/CODES - EEC-IV (3.0L) article for sensor specifications and circuit testing procedure.