How does a blend door work?
A blend door is mounted within the heating and air conditioning system and pivots to divert warm or cool air into different passages within the system to keep the passenger area at the desired temperature. Blend doors move by way of a mechanical device referred to as an actuator.
What should I do if my blend door actuator is not working?
Afterward, your job is to check the blend door actuator by using the climate control if it is blowing hot and cold air. In most cases, it should be fixed, and if it doesn’t, there is no harm in taking your car to a professional repairer. Sometimes, there can be a major issue, and that can be confirmed after an in-depth check.
What are the most common problems with door installation?
Most door installation problems can be solved if you know a few simple tricks. The most common problem caused by the bottom plates not being straight across or out of alignment is you just can’t seem to get the door to fit tightly to the door stop. A common term for this is your door is out of plane.
Why does my Blend door keep moving back and forth?
Inconsistent Airflow: If the blend door is moving back and forth, then the airflow will be diverted incorrectly or maintained incorrectly. That’s a pretty standard indication that there’s a problem with the blend door actuator.
Why is my GM blend door not working?
When this part fails drivers complain they can’t control the temperature the way they use to. They often describe correct operation as intermittent. Owners with dual zone systems often say the passenger side doesn’t respond or becomes stuck in the cold or hot position.
What to do if your blend door actuator is not working?
If the blend door isn’t moving freely, you have to remove the heater plenum and fix it before mounting the new actuator. To confirm that you’re replacing the right blend door actuator and to test door operation, turn the blower and work the blend door in both directions.
Inconsistent Airflow: If the blend door is moving back and forth, then the airflow will be diverted incorrectly or maintained incorrectly. That’s a pretty standard indication that there’s a problem with the blend door actuator.
Why does my Blend door make a tapping sound?
Each time you notice a Knocking or tapping sound when you start your vehicle or turn on the HVAC system, it signifies an issue with the blend door actuator. Inconsistent temperature: An Oscillatory moment of your blend door will cause the airflow to be diverted incorrectly.
Can a heater be removed from a blend door?
If the door is stuck the heater plenum with need to be removed and the problem resolved before installing the new unit. To test the blend door operation and too double check that you are changing the correct actuator motor turn the blower motor on and work the door in each way. You will be able to feel the air change temperature or vent level.