Engine Rpm Sensor (RPMS)
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.
This sensor is used only on diesel engines. Disconnect RPMS electrical connector. Using DVOM, measure resistance across sensor terminals. Resistance should be 2400-2800 ohms. Replace sensor if resistance is not as specified.
NOTE:
Engine must be at normal operating temperature of 192-212°F (89-100°C) when checking/setting dynamic timing.