EGR Valve Position (EVP) Sensor/EVR Solenoid
WARNING: This page is about a different car, the 1995 Ford Explorer and 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 (4.0L) article. If no diagnostic trouble code has been set, see CIRCUIT TEST DN in TESTS W/CODES - EEC-IV (4.0L) article for sensor specifications and circuit testing procedure.