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SERIES 60 FUEL TEMPERATURE SENSOR

The Series 60 diesel engine Fuel Temperature Sensor (FTS) is installed into the secondary fuel filter. See Figure 20415 . The FTS sends an electrical signal to the ECM indicating fuel inlet temperature. The ECM uses this information to calculate fuel consumption. ‪

Fuel Temperature Sensor Location (Series 60 Diesel Engine)

The Series 60 genset natural gas engine Fuel Temperature Sensor (FTS) is installed into the gas mixer housing. See Figure 27873 . The FTS sends an electrical signal to the ECM indicating fuel inlet temperature. The ECM uses this information to adjust gas flow and control air fuel ratio. ‪

1. Fuel Temperature Sensor ‪

Fuel Temperature Sensor Location (Series 60G Genset Application)

On Series 60G engines with the high pressure fuel system the fuel temperature sensor is located in the PSV. See Figure 34515 . ‪

1. Fuel Temperature Sensor ‪

5. Air Inlet Elbow ‪

2. PSV ‪

6. Low Pressure Regulator ‪

3. Fuel Mixer ‪

7. Air Temperature Sensor ‪

4. Throttle ‪

8. Fuel Pressure Sensor ‪

9. Fuel Inlet Tee Fitting ‪

Fuel Temperature Sensor Series 60G Engine with High Pressure Fuel System

Replacement of Fuel Temperature Sensor

The FTS is non-serviceable and should be replaced as a unit. No adjustment is required. ‪

Removal of Fuel Temperature Sensor

Remove the FTS as follows: ‪

  1. Disengage the locking tang on the two-wire connector. Grasp the body of the connector and gently pull it from the socket.
  2. Use the appropriate wrench on the hex portion of the sensor and unscrew it from the fitting.

Installation of Fuel Temperature Sensor

Install the FTS as follows: ‪

NOTICE:

The Fuel Temperature Sensor is an electrical device. Use care in the installation process or damage may occur. ‪

  1. Use Loctite Pipe sealer with Teflon PT-7260 (or equivalent) on all but the first two threads of the FTS to prevent leaks.
  2. Screw the FTS into the fitting or housing.
  3. Engage locking tang.
  4. Turn the ignition to the ON position. Observe the DDR for any diagnostic code(s). If any code(s) other than code 25 is logged, refer to the Detroit Diesel Single ECM Troubleshooting Manual (6SE497).