The Secret to Balanced Airflow Exploring the Intricacies of Blend Doors

Shop for Air Conditioning (AC) Heater Blend Door Actuators in Heater Parts and Components. Buy products such as Four Seasons 73143 HVAC Air Door Actuator ... 1. Knocking and Clicking When you go to change the airflow in your vehicle, you'll hear a knocking sound, or a clicking coming from the vents and behind the ... There is no blower resistor on auto climate control cars. I doubt coolant had any effect on the wiring, it's all above the core afterall, but I ... The blend door actuator is controlled by the vehicle's climate controls. The blend door can open and close at various positions to block or allow air passing ... I'd like to attempt accessing and removing/repairing or replacing the blend door. How do I access the door? If I remove the heater core can I access it then? blend door controls the temp by moving a door allowing more or less air to blow through the heater core. mode door controls which vents the air ... The blend door actuator replacement did not resolve the issue, but our Mercury Mechanic will be able to help you further with this problem. Get free shipping on qualified HVAC Blend Door Actuator products or Buy Online Pick Up in Store today in the Automotive Department. The driver's side blend door actuator moves fully to the cool position [ this is why the ac works well after being topped up ] , but does not move all the way ... The condition you are describing is most likely a broken blend door on the driver's side (the clicking sound that is now gone is the biggest clue).