Genuine Mitsubishi Sigma Thermostat

Mitsubishi Sigma Thermostat Parts Questions & Experts Answers

• Thermostat
  MD972903
  Q: How does a Thermostat help an engine maintain optimal internal temperatures, and what are the implications of running too cool or overheating on Mitsubishi Sigma?

  A:

  In an engine, the internal temperature must be kept within certain limits for it to function efficiently. The cooling system, which circulates a fluid around the combustion cylinders, removes heat from the engine and transfers it to the radiator. Here, the heat is dissipated out into the airflow created by the fan and vehicle movement. Although many people think the worst thing that can happen is for an engine to overheat, it's equally common for an engine to run too cool. The result is inefficient fuel burning and the lubricating oil will not perform properly. malfunctions that may be diagnosed as electrical or tune-up fault. The thermostat controls coolant flow according to temperature, allowing for optimum heat exchange. Regular checks are necessary for this component, especially under special operating conditions like towing. To replace the engine if the gauge indicates low readings, the heater gives little heat, the gas mileage seems reduced or performance is affected. In case of overheating the problem could be low coolant, badly tuned or dirty cooling system. Test the thermostat before you take further action. To change the thermostat, drain the cooling system (antifreeze is harmful). The thermostat housing is generally removeable without unfastening the top radiator hose, and if testing the thermostat, you'll want to suspend it in heated water to check the opening temp. Once scraping has taken place on the gasket surfaces, the new thermostat should be installed in a manner that ensures correct seating. A new gasket should then be sealer before the housing is reassembled. Reconnect the hoses, refill the coolant, and check for leaks. Any other issues with the housing can be addressed.