What to know about Thermostat:
A thermostat is part of the cooling system that controls the temperature of the coolant in the engine. The thermostat is a metal valve that has a temperature sensor built in. It can either be open or closed. When the thermostat is closed, it retains the coolant in the engine.
When the engine gets to a programmed temperature, the thermostat opens letting coolant to circulate. The circulation of coolant stops the engine from overheating. If the thermostat fails to open, the car will overheat. If the thermostat fails to close, the engine may never reach the ideal temperature (~220F). The thermostat opens and closes many times when the car engine is running. It is the most common part in the cooling system to fail, causing the car to overheat.
READ ALSO: SIGNS OF A BAD CAR THERMOSTAT
Facts to Note:
The entire cooling system should be examined when the thermostat is changed.
When the thermostat is changed, the gaskets and housings should be cleaned thoroughly.
How to Fix:
Scan the computer in the car for codes.
Confirm that the car is overheating.
Take away and change thermostat if it is defective.
Clean old gasket surfaces.
Remove corrosion from housings/hose connections.
Fill cooling system.
Check for leaks and proper operating temperatures.
READ ALSO: HOW TO REPAIR A CAR STARTER
Have the thermostat changed anytime you have major work done on the coolant system.
Common symptoms indicating you may need to change the Thermostat:
Car heater does not work.
Check Engine light is on.
Importance of this service:
A vehicle’s engine gets extremely hot, and in order to avoid overheating, it needs to be correctly cooled. The engine is cooled by a viscous liquid called coolant. The coolant is spread around the engine, where it absorbs heat, which lets the engine to remain at a safe temperature. A fan then lowers the temperature of the coolant, which lets it to run back through the engine once more. The thermostat is in charge of determining when the coolant needs to enter the engine. The thermostat determines the temperature of the engine, and then acts as a valve that allows coolant in, or keeps coolant out. When the engine is too cold, the thermostat keeps coolant out; when the engine is too hot, it lets coolant in.
When the thermostat stops functioning, it will either get stuck open or closed. If the thermostat is stuck open, the coolant will continually flow through the engine, absorbing too much heat, and the engine will never reach optimal running temperature. If the thermostat is stuck closed, the coolant will never circulate through the engine, and your engine will quickly overheat, which can cause severe damage.