How to Check if the Thermostat is Damaged?
1 Answers
Here are the methods to check if the thermostat is damaged: 1. To determine whether the car's thermostat is damaged, check when starting the car. After the engine begins working, inspect the coolant tank. If the cold water inside does not show any flow movement, it indicates the thermostat is damaged. 2. After starting the car, touch the upper and lower radiator hoses to feel the temperature. Generally, three minutes after the engine starts, the temperature of the upper and lower hoses should be the same. If they are not, the thermostat is likely damaged. 3. When starting the car, pay attention to the engine's warm-up time. If the engine takes significantly longer to warm up than before and the car's power is noticeably reduced, the thermostat is probably faulty. 4. When the car is cold, start the engine and observe after five minutes. If the coolant temperature does not reach the normal range of 85 to 105 degrees, the thermostat may be malfunctioning. 5. Monitor the temperature gauge. When it reaches 70 degrees, open the radiator's drain valve to test the water temperature. If the water temperature is very low, the thermostat is likely damaged. 6. Additionally, consider the car's mileage when deciding whether to replace the thermostat. Generally, the safe lifespan of a wax-type thermostat is 50,000 km. Beyond this mileage, it should be replaced.
