What Causes the Engine Water Temperature to Remain Consistently Low?
1 Answers
Car water temperature remains low due to: thermostat failure, water temperature sensor malfunction, or cooling fan continuously running. Normally, the engine's proper operating temperature ranges from 90°C to 100°C, neither too high nor too low. Typically, it takes a few minutes for the temperature to rise from startup. Exceeding this time can be judged as the water temperature being too low. Below are detailed explanations: Thermostat Failure: If the thermostat fails, it directly prevents the water temperature from rising. Water Temperature Sensor Malfunction: Another reason the engine water temperature does not rise could be a faulty water temperature sensor (interruption in the temperature signal to the dashboard). A malfunctioning water temperature sensor prevents the temperature gauge needle from operating correctly, creating the illusion that the water temperature isn't rising, even if the engine temperature is high, the gauge shows no response. Cooling Fan Continuously Running: Both overheating and overcooling affect the car's normal operation, making heat dissipation regulation crucial. The cooling fan is a key component in regulating the engine's heat dissipation. Normally, when the engine water temperature reaches a certain level (generally above 90°C, varying by specific models), the cooling fan automatically turns on to accelerate heat dissipation and prevent the engine from overheating. However, if the cooling fan continues to run when the engine is cold, it hinders the engine from warming up quickly and increases fuel consumption.
