The thermostat is a crucial part of the car's cooling system. It regulates the flow of coolant to the engine, maintaining an optimal operating temperature. Without a thermostat, the engine can overheat or run too cool, both of which can cause severe damage.
When the engine is cold, the thermostat is closed, preventing coolant from flowing to the radiator. This helps the engine warm up quickly. As the engine reaches its operating temperature, the thermostat opens, allowing coolant to flow through the radiator, where it is cooled by the air flowing through the grille. The cooled coolant then returns to the engine, and the cycle repeats.
If the thermostat is removed, the coolant will flow through the radiator continuously, even when the engine is cold. This can cause the engine to run too cool, which can lead to poor fuel economy, increased emissions, and engine wear.
On the other hand, if the thermostat fails in the closed position, the coolant will not be able to flow through the radiator, and the engine will overheat. This can cause serious damage to the engine, including cracked cylinder heads, warped pistons, and blown gaskets.
Therefore, it is important to ensure that the thermostat is functioning properly. If you suspect that the thermostat is faulty, have it checked by a qualified mechanic as soon as possible.