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Fuel Gauge Sending Unit

  1. Install fuel gauge sending unit on test bench. On 2.6L, connect ohmmeter to fuel gauge sending unit at terminals No. 1 and 3. On 3.2L, connect ohmmeter to fuel gauge sending unit terminals No. 1 and 2. SeeFig 1 and Fig 2 .
    Fig 1: Measuring Fuel Gauge Sending Unit Resistance (Except 3.2L)
    G93G01615Courtesy of ISUZU MOTOR CO.
    Fig 2: Measuring Fuel Gauge Sending Unit Resistance (3.2L)
    G93I01616Courtesy of ISUZU MOTOR CO.
  2. As float is moved, resistance reading should change smoothly. See FUEL GAUGE SENDING UNIT RESISTANCE  . On 3.2L, connect ohmmeter to fuel gauge sending unit terminals No. 1 and 4. Resistance should be 13.6 ohms. If resistance readings are not as specified, replace sending unit.
FUEL GAUGE SENDING UNIT RESISTANCE

Sending Unit Position Ohms
2.6L
Empty 113.4-126.5
1/2 40.5-49.5
Full 14.9-19.1
3.2L
Empty 115-125
1/2 43.5-46.5
Full 16.2-17.8
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