Automotive Information Cooling System Flash Card Set 509188

Card 1 of 10
Thermostat

The thermostat controls coolant (and, through it, engine) temperature by regulating the flow of coolant through the radiator. A bypass tube allows coolant to bypass the radiator and flow back into the water pump when its temperature is low enough that the thermostat is closed.

bypass tube

A __________ routes coolant past the radiator and directly to the water pump when its temperature is low enough that the thermostat is closed.