Final answer:
Leaks from the heater core can result in coolant misting out from the vents or dripping from the AC evaporator's drain hole. The heater core is responsible for providing heat and can leak if faulty.
Step-by-step explanation:
The correct answer is option d) heater core. When a heater core is leaking, it allows coolant to escape, which can then result in the misting of a coolant from the vents or coolant dripping from the AC evaporator's drain hole. The heater core is part of the vehicle’s cooling system that provides heat to the cabin. When it's faulty, it doesn't contain the coolant properly, which then leaks into the vehicle and creates the described symptoms. None of the other options provided; orifice tubing, accumulator, or actuator, are related to the symptoms of misting out of the vents or leaking coolant.
Leaks from the heater core can result in coolant misting out of the vents or coolant dripping from the same drain hole used by the AC evaporator. The heater core is a small radiator-like component located in the dashboard of a vehicle. It works by allowing hot coolant from the engine to flow through it, which in turn heats up the air that is blown into the cabin through the vents.
If there is a leak in the heater core, coolant can escape and find its way into the HVAC (Heating, Ventilation, and Air Conditioning) system. This can lead to coolant misting out of the vents or dripping from the drain hole used by the AC evaporator.