Pressure Feedback (PFE) EGR Sensor & Differential PFE (DPFE)
WARNING: This page is about a different car, the 1995 Lincoln Mark VIII. However, it is still accessible from the selected car via links, so may be relevant.
SENSOR
Faults in sensor or circuit should set a diagnostic trouble code. See QUICK TEST in the TESTS W/CODES - EEC-IV article. If diagnostic trouble code has not been set, see CIRCUIT TEST DL in the same article for testing.