Fuel Gauge
The fuel gauge is an electrical instrument that measures an electrical
current from a variable resistor in the fuel tank. A float controls the variable
resistance.
When the fuel tank is full, the resistance is high. Then, the fuel gauge
moves to the maximum position (Full) on the gauge face. For diagnostic information,
refer to
Instrument Cluster System Check
.
Fuel Gauge Sender
The fuel gauge sender attaches to the top of the fuel tank. A cam lock
ring retains the sender. The tank and the sender uses a seal between them.
The sender has two or three pipes attached to hoses. One pipe is for
the fuel feed line. The second pipe connects to the vapor canister. The third
pipe is a fuel return line to the fuel tank.
Some senders use a short pigtail connector lead. On other senders, the
connector attaches directly to the sender. For diagnostic information, refer
to
Instrument Cluster System Check
Coolant Temperature Gauge
Coolant Temperature and Oil Pressure Senders (4.3L Engine)
