How to fix a HVAC blend door issue?

Set the controller to the middle (12noon) and pulled the plug on the actuator. Waited 30 minutes (ate). Came back out, plugged it in. Pulled the HVAC fuses (firewall and dash) waited 30-45 minutes. Put them back in. Cycled the ignition key (not start) and left for 10 minutes (doors closed). Started truck, shut truck off. Pulled keys.

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 the actuator called a blend door?

The blend door, which the actuator controls, is what diverts and controls the flow of air. There should be controlled by some plastic gears that are responsible for moving the blend door where the actuator sends the correct signals. The blend door is called a door because it really is just a flat panel of plastic.

Is there a problem with my Blender actuator?

Knocking: This is an unusual symptom, but if you’re experiencing this, it’s almost definitely a problem with your blender actuator. When you start the car, or just the AC system, and notice a knocking sound like someone tapping on your door, that is indicative of a problem with the blend door actuator.

How to turn a blend door on and off?

Insert actuator shaft into A/C air temperature control door and secure A/C electronic blend door actuator to A/C evaporator housing with four retaining screws. Install electrical connector to bracket on A/C electronic blend door actuator. Install instrument panel insulator and console panel if equipped. Connect battery ground cable.

Why is my Blend door actuator not working?

The logic behind this is that it takes the heater a minute or two to warm up. If you have it set all the way to cold, there should be no change in temp as the engine warms. If it does change, the blend door is still letting heat through. This would narrow it down to a bad actuator or a stuck blend door.

Can a hung up blend door cause an issue?

If it is the blend door actuator (or a hung up blend door) that is causing the issue, the vehicle will either be stuck at a certain temperature, or it’ll only be able to go so high or so low before any further input fails to register. 3. Two Different Temperatures