The thermostat in a car is an integral part of the engines cooling system. Its primary function is to regulate the temperature of the engine to help it stay cool. The thermostat is positioned between the engine and the radiator, and it measures about 2 inches in diameter. When the engine is cold, the thermostat blocks the flow of coolant to the radiator until the engine has warmed up. As the temperature rises, the thermostat slowly begins to open, allowing the coolant to flow through the engine. By the time the engine reaches approximately 200 degrees Fahrenheit, the thermostat will be open entirely. The thermostats job is to monitor the temperature of the engines coolant to precisely regulate the flow of coolant through the radiator, ensuring the engine operates at an optimal temperature.

In addition to monitoring temperature, the thermostat is also tasked with blocking the flow of coolant to the radiator when the engine temperature is cold. This helps the engine warm up as quickly as possible, reducing engine wear, deposits, and emissions. If the thermostat is stuck in an open position, the engine may not be able to obtain an ideal regulating temperature, which means it will take longer for the vehicle to heat up.

If the thermostat is faulty, it can cause several issues, such as overheating, fluctuating temperature gauge, and longer time to heat up. Therefore, it is essential to ensure that the thermostat is working correctly to ensure the vehicle runs properly.