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According to N47D20O1 engine information, our engines have conventional thermostat, where coolant temperature is the sole determinant of when the device opens. It is not electronically controlled.
Thermostat starts to open at 88 C (190 F) and is fully open at 100 C (212 F).
Today, we have had a temperature down to 14 F this morning. The needle didn't start to rise until about 3 miles of 45 mph driving. At the light, it dropped again, to then reach its operating temperature after getting on interstate for a few minutes. I didn't feel much change in torque, just lower computer calculated fuel economy and temp gauge staying low until getting on highway.
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