E 450 V8-6.0L DSL Turbo VIN P (2004)
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 EOT 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 maintain stable idle quality. Fuel quantity and timing
is controlled throughout the total operating range to provide adequate torque and power.
An EOT 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.
