Fuel Temperature Sensor
| 1 - FUEL FILTER ASSEMBLY | 6 - FUEL FILTER |
| 2 - PRIMER BUTTON | 7 - FUEL TEMPERATURE SENSOR |
| 3 - FUEL SUPPLY TO HIGH PRESSURE PUMP | 8 - FUEL SUPPLY FROM TANK |
| 4 - FUEL HEATER | 9 - AIR BLEED SCREW |
| 5 - WIF SENSOR |
The fuel temperature sensor is integrated into the fuel filter housing, along side of the fuel heater. The sensor detects the temperature of the fuel and supplies that information to the ECM. The sensor ranges from - 40°F (- 40°C) to 284°F (140°C). If the engine is cold, the actual value sent will read ambient temperature. The value rises after the engine has been started. The fuel temperature sensor IS NOT SERVICED separate from the housing assembly.