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Where is the temperature sensor for engine fan located on a peugeot 406 v reg?

The temperature sensor for the engine fan on a Peugeot 406 v reg is located on the thermostat housing. It is a small, cylindrical sensor with a single wire connector. The sensor is located on the left side of the engine bay, just below the coolant reservoir. To access the sensor, you will need to remove the air intake hose.