Signs That Your Car's Thermostat Is Not Working

The thermostat is responsible for maintaining the temperature of the engine at the desired level; if it fails, the car may overheat or not reach the desired temperature

Thermostat this is a small part that is part of the cooling system vehicle, the function of which is to regulate the temperature of the engine and when the engine fails, it can overheat and stop working.

That's why it's so important to know how it works, keep an eye on it, and be aware of the signs that it's no longer working.

If you don't know what these signs are, don't worry, here we will tell you what they are. These are the most common signs that a car's thermostat is not working.

1.- Check the thermostat

The thermostat can be tested with hot water. To perform this test, you must drain the radiator, remove the radiator hoses, remove the thermostat, submerge it in water, bring the water to a boil, and finally remove the valve and check that it is open.

2.- Cooling flow.

– Open the radiator. Make sure the car is cold before opening the radiator.

- Start a car and do not turn it off for the next 20 minutes. This way you can calibrate and reach the most suitable temperature.

– Check that the coolant circulates through the radiator. If you see coolant flow, the valve has opened correctly, then the thermostat is working.

3.- Overheating

When the thermostat isn't working properly, it doesn't know when to let coolant through to cool the engine, causing the temperature to get too high and the engine to stall.

4.- Not warm enough

When not working properly, the thermostat does not stay closed long enough to maintain the ideal temperature.

5.- The temperature rises and falls

In these cases, the problem is definitely with the thermostat thermometer, which does not show the correct temperature and tends to open and close at the wrong time.

6.- The engine works differently

Again, the engine needs a temperature range of 195 to 250 degrees Fahrenheit to run properly. Some people find that the engine will run fine without a thermostat. This is completely wrong! Well, the only thing that will happen is that the engine will work harder and eventually wear out.

For optimal performance, the engine must reach a temperature range of 195 to 250 degrees Fahrenheit. If the temperature is lower, the engine will not run properly, and if the temperature is higher, the engine will overheat.

The thermostat maintains this ideal temperature by controlling the flow of coolant and keeping the engine warm: it opens to let coolant in and closes to let the engine warm.