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WATCH: How Map-Controlled Thermostats Work

An operating map stored in the engine control unit has predefined set points for the vehicle load and speed that determine the ideal coolant temperature for the driving situation, and when and how coolant should be circulated.

WATCH: Understanding Automotive Thermostats

Thermostat technology is changing and giving more control to the engine computer, which is a good thing for gas mileage.

Check Out The December Issue Of Counterman Magazine

Access the entire interactive and easy-to-view digital issue featuring articles on Brake Maintenance, Diesel Additives, Map-Controlled Thermostats, The Rise Of Sensors, and much more!

The Electrically Assisted Thermostat: A Smarter Way To Greater Engine Efficiency

Thermostats were originally incorporated to speed engine warm-up and reduce cylinder ring wear. Today, thermostats play an important role in increasing engine combustion efficiency and reducing emissions.