Will the fan run if the water temperature sensor is broken?

[LeGianna]

If the water temperature sensor is broken, the fan will not run. The symptoms of a broken water temperature sensor include: 1. The water temperature gauge needle does not move; 2. Difficulty starting a cold engine; 3. The ECU cannot receive the signal for a rich air-fuel mixture; 4. Only a lean air-fuel mixture can be provided to the engine; 5. Unstable idle and difficulty accelerating. The water temperature sensor consists of a thermostat part and a water level control part, and it is accompanied by a pressure reducing device before the electric valve and a rotary muffler heater for heating. The functions of the water temperature sensor are: 1. Increasing the fuel injection volume at low temperatures; 2. Increasing the ignition advance angle at low temperatures; 3. The ECU controls the idle control valve based on the water temperature sensor signal at low temperatures to increase the idle speed; 4. Delaying ignition at high temperatures to prevent knocking.