Thermostat : The thermostat on an engine helps regulate the flow of coolant in the engine. By opening when the engine is at the high point temperature and closing at the low point temperature, the thermostat helps to maintain a normal operating engine temperature. The design of the thermostat uses wax pellets to open and close the thermostat. When the wax melts, it expands and opens the thermostat. When the wax cools, it solidifies and retracts closing the thermostat. Thermostats are not repairable, they must be replaced when they fail.
Thermostats keep an engine at a temperature of around 195 – 205 degrees Fahrenheit. If they fail, they can cause the engine to overheat. If the engine overheats quickly, this usually means it is stuck closed not allowing the coolant to circulate. If the thermostat sticks open, the engine may overheat by circulating the coolant too quickly or the engine may run too cool causing excessive fuel usage. In some cases, a check engine light may come on due to a cooling system code.
An auto technician familiar with your make and model vehicle can accurately diagnose and replace the thermostat. If the engine overheats, it is at risk of blowing a cylinder head gasket.
Have a cooling system or thermostat problem? Get your vehicle serviced at Guy’s Automotive today. Guy’s Automotive repairs all types of cooling system problems and more.