What are the symptoms of a faulty thermostat in the Buick Excelle?

[HadleyLynn]

The symptoms of a faulty thermostat in the Buick Excelle are as follows: 1. Water temperature warning light on: Thermostat failure, the thermostat opening is too small, affecting the engine's large and small circulation, preventing effective heat dissipation, leading to an increase in engine water temperature and the water temperature warning light illuminating. 2. Abnormal noises: The thermostat opening is too large, causing the engine water temperature to be too low, slow water temperature rise, increased fuel consumption, and abnormal engine noises. 3. Water temperature warning light on: The thermostat is stuck, easily forming carbon deposits, leading to unstable engine idle speed and causing engine vibration. Additional information: In the automotive engine cooling system, the car thermostat automatically adjusts the amount of water entering the radiator based on the cooling water temperature, changing the range of water circulation to regulate the cooling system's heat dissipation capacity, ensuring the engine operates within an appropriate range.