Ranger 4WD V6-3.0L VIN U (1997)
Fuel Gauge Sender: Description and Operation
Fuel Level Indication System
The fuel level indication system is a magnetic gauge system. It consists of a magnetic fuel gauge mounted in the instrument cluster and a sending unit
located in the fuel tank with an instrument cluster gauge amplifier in series between the two. No instrument voltage regulator is used with this system.
Fuel Sending Unit
The fuel sending unit consists of a variable screened resistor made up of a ceramic substrate. It is controlled by the action of an attached float in the
fuel tank. When the fuel level is low, resistance in the sending unit is low. When the fuel level is high, the resistance in the sending unit is high. As the
float moves from empty to full, the resistance will gradually and continuously increase.
