F 450 4WD Super Duty V8-6.0L DSL Turbo VIN P (2003)
Oil Temperature Sensor For ECM: Description and Operation
Engine Oil Temperature Sensor
Engine Oil Temperature (EOT) Sensor
The Engine Oil Temperature (EOT) sensor is a thermistor whose resistance decreases as engine oil temperature increases. The Engine Oil
Temperature signal is used by the PCM to calculate fuel quantity, injection timing and glow plug operation.
At low ambient air temperatures, and oil temperature below 70°C (158°F), low idle is increased to a maximum of 1300 rpm to increase engine
warm-up. Fuel quantity and timing is controlled throughout the total operating range to provide adequate torque and power.
An Engine Oil Temperature signal detected out of range, high or low, by the PCM will cause the PCM to substitute a temperature based on ECT to be
used for operating purposes.
