* A/C Recharge: Low refrigerant is a very common reason for an AC system to fail to cool properly or not cool at all. If the system was low on refrigerant, the recharge *should* have fixed that specific issue. However, a leak could still exist, causing the refrigerant to quickly escape again.
* Door Actuator Replacement: The door actuator controls the direction of airflow (e.g., vents, floor, defrost). A faulty actuator can prevent cold air from reaching the desired location, even if the system is producing cold air. Replacing it should restore proper airflow direction. However, if the problem wasn't the actuator, replacing it won't fix the underlying cooling issue.
Why your AC might still not be working after these repairs:
* Refrigerant Leak: As mentioned above, a persistent leak in the AC system will render the recharge ineffective. A mechanic needs to find and repair the leak using specialized equipment.
* Compressor Failure: The compressor is the heart of the AC system. If it's faulty (seized, worn out, etc.), it won't compress the refrigerant, preventing cooling. This requires compressor replacement.
* Condenser Failure: The condenser is a radiator-like component that releases heat from the refrigerant. If it's clogged, damaged, or leaking, cooling will be significantly reduced.
* Evaporator Failure: The evaporator is located inside the cabin and cools the air that is blown into the vehicle. A faulty evaporator can lead to poor cooling.
* Electrical Issues: Problems with the AC clutch, wiring, relays, or the pressure switch can all prevent the system from working properly.
* Blower Motor: While unrelated to the refrigerant, a weak or failed blower motor can prevent sufficient airflow, making the vehicle feel as if the AC isn't working effectively.
In short: The repairs you've had done were worthwhile steps in diagnosing the problem, but they don't cover all possible causes. If the AC still isn't working, you need a mechanic to perform a thorough diagnosis of the entire system to pinpoint the exact problem and repair it. They will use specialized tools to check refrigerant pressure, look for leaks, and test the various components.
