Quote:
Originally Posted by g6civcx
You want the inlet to the heater core to be the line regulated by the temperature control rod.
As for coolant circulation in the block, check the FSM for direction of coolant circulation as controlled by the water pump.
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Well, the thing is that if you pull the lever to cold, the coolant within the heater core will be stuck and you it will not exchange heat from the engine anymore since coolant from engine is not getting in. So it really does not matter.