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I Changed My Thermostat And Still Overheating : [ Reasons ]

I Changed My Thermostat And Still Overheating : [ Reasons ]

Have you just changed your thermostat, and your car is still overheating? It can be very problematic as you might require to go to the mechanic again. The truth is that many components of the vehicle engine can result in overheating.

These reasons include a failing coolant, a damaged belt, a failing head gasket, a faulty radiator, a bad water pump, and much more.

To make your work effortless, below are mentioned all the problems that may result in your vehicle overheating after changing a faulty thermostat with a new one. Read the article to know why your car has overheated issues even after replacing the thermostat.

I changed my thermostat, and it’s still overheating: why?

There can be a lot of reasons behind your car overheating, even after replacing your thermostat. Even if you change your automobile’s thermostat but still retain polluted coolant, the vehicle will still overheat.

The coolant’s work is to transmit heat and prevent any engine damage caused by freezing or boiling. Remember that heat can be transmitted with only liquid in the engine system. Thus, it is crucial to protect the coolant from freezing or evaporating. If there is pollution in the coolant, it will not stream smoothly.

As an outcome, this will influence the engine performance as it will become too hot. Faulty or bad water is another major cause of your automobile becoming too heated.

This is because your vehicle won’t be in a condition to release coolant through the engine space. As a result, the engine will overheat. And if you don’t replace or repair it soon, this may cause other serious problems.

What to do after replacing a thermostat?

After changing the thermostat with a new one, the technician needs to refill the antifreeze. Then, don’t cover the radiator, and start the car. Give it five minutes to let all of the antifreeze spread throughout the car engine. Then, the technician has to shut off the engine and let it cool.

When you replace a thermostat, it’s important to check for leaks in the system. A few common places for leaks are around your water heater and cooling coils. If you find any leaks in these areas, simply contact a professional who will help you fix them before they get worse.

Will a new thermostat help overheating?

One of the early indications that the thermostat may require an alternative is how much heat is created inside. It isn’t unknown for an automobile to attain a high temperature and probably become too heated.

The radiator plays a substantial part in the cooling of the engine. The radiator transmits heat from the liquid inside to the outside, therefore cooling the liquid.

Thus, it cools down the vehicle’s engine and keeps the proper heat. In case the radiator is bad, it won’t cool down the coolant. This implies that the liquid won’t cool down the car engine’s temperature.


If by chance, your car is overheating after replacing the thermostat, it may be time to consult with a professional. The most common reason for this problem is that a new thermostat simply doesn’t work as well as an old one did.

With so many variables involved in maintaining your vehicle, there’s no way of knowing exactly what caused the issue until all tests have been run and results analyzed.

If you’re still experiencing problems after following these instructions, then consider calling an auto repair shop or taking it to your local dealer before any serious damage occurs while warming up or running down cold days!