RAM 1500 Van V8-5.2L CNG VIN T (1999)
Fuel Gauge Sender: Description and Operation
FUEL PUMP MODULE
Top View of Fuel Pump Module
Fuel Pump Module Components (Typical Pump Module Shown)
The fuel pump module on all models is installed in the top of the fuel tank. The fuel pump module contains the following components:
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A combination fuel filter/fuel pressure regulator
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Electric fuel pump
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Fuel pump reservoir
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A separate fuel pick-up filter (strainer)
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Fuel gauge sending unit (fuel level sensor)
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Fuel supply line connection at filter/regulator
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A plastic threaded locknut to retain pump module to fuel tank
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A gasket between tank flange and module The fuel gauge sending unit (fuel level sensor), and pick-up filter (at bottom of module) may be
serviced separately. If the electrical fuel pump requires service, the entire fuel pump module must be replaced. The fuel filter/fuel pressure
regulator may be serviced separately. Refer to Fuel Filter/Fuel Pressure Regulator Removal/Installation for additional information.
FUEL GAUGE SENDING UNIT
The fuel gauge sending unit (fuel level sensor) is attached to the side of the fuel pump module. The sending unit consists of a float, an arm, and a
variable resistor (track).
The resistor track is used to send electrical signals to the Powertrain Control Module (PCM) for fuel gauge operation and for OBD II emission
requirements.
