When it comes to your car, it is important to make sure that all of the parts are functioning properly. This includes the tensioner pulley. The tensioner pulley is responsible for keeping the serpentine belt tight. If the tensioner pulley is not working properly, the belt can become loose and cause the engine to overheat.
If you think that the tensioner pulley on your car is not working properly, it is important to take it to a mechanic to have it checked out. It is also important to not try to over tighten the tensioner pulley yourself. This can cause more damage to the pulley and may even cause the engine to overheat.