2500 4x2 Pickup V10-488 8.0L Magnum (1996)
Fuel Gauge Sender: Description and Operation
DESCRIPTION
The sending unit consists of a float, an arm, and a variable resistor (track). The track is used to send an electrical signal for fuel gauge operation.
OPERATION
As the fuel level increases, the float and arm move up. This decreases the sending unit resistance, causing the fuel gauge on the instrument panel to
read full. As the fuel level decreases, the float and arm move down. This increases the sending unit resistance, causing the fuel gauge on the
instrument panel to read empty. A reed type switch is also used to monitor fuel level in fuel tank. An electrical signal is sent to the PCM from this
switch to indicate fuel level. The purpose of this feature is to prevent a false setting of misfire and fuel system monitor trouble codes if the fuel
level in the tank is less than 15 percent of its rated capacity. This switch is mounted in the fuel reservoir within the fuel pump module.
LOCATION
The fuel gauge sending unit is attached to the side of the fuel pump module.
