Locate the selector switch: The selector switch is usually located on the dashboard of your Aerostar, and it controls the airflow direction inside the vehicle.
Check the selector switch position: Make sure the selector switch is correctly set to the desired vent or heat setting. If it's not, adjust the switch and see if that resolves the issue.
Inspect the selector switch: Visually inspect the selector switch for any signs of damage or wear. Look for loose or broken components, and check if the switch moves smoothly when you turn it.
Test the selector switch: To further diagnose the issue, you can try turning the selector switch to different settings and see if the airflow changes accordingly. If the airflow doesn't change, or if it doesn't respond to the switch at all, the switch itself may be faulty and need to be replaced.
Check vacuum lines: If your Aerostar has vacuum-operated climate controls, there might be a vacuum leak or a problem with the vacuum lines that control the selector switch. Inspect the vacuum lines for leaks or disconnections, and make sure they are properly connected.
If you've gone through these steps and the selector switch still doesn't work properly, it's recommended to consult a qualified mechanic or automotive technician. They can further diagnose the issue and perform any necessary repairs or replacements to restore the proper functionality of the selector switch and airflow direction in your Aerostar.
