What's the water temperature to turn on the heating?

When the water temperature reaches 80 to 90 degrees, you can turn on the warm air. Because the source of warm air is engine coolant, if the warm air is turned on too early, it will slow down the temperature rise of coolant and increase the warm-up time. Before the engine enters the working temperature, due to the poor atomization effect of the mixed gas, the fuel injection quantity will increase, which is easy to produce carbon deposition. When the warm air is turned on, the coolant in the warm air tank will also enter the engine block, resulting in a long warm-up of the engine. In cold weather, it is necessary to raise the temperature inside the car quickly. When the car starts, the engine starts to warm up. After the engine temperature indicator reaches the middle position, first turn on the warm air conditioner, and set the air circulation to external circulation, so that the cold air in the car can be discharged outside the car. After waiting for 2 to 3 minutes, set the air circulation to internal circulation.