Blend Door Actuator Clicking With Car Off

A blend door actuator is made up of an electric motor that turns a plastic gear set in one direction or another which is connected to an air control door pivot at the final drive of the unit.

Blend door actuator clicking with car off. The blend door actuator is most of the time at least accessible for testing but sometimes removal of the dash is necessary for replacement. I am worried because i will turn my car off and the noise persist for a while then turn off. An actuator can become faulty if the plastic gear set turns out to be fragile and it breaks. A plastic gear set is frequently rotated from one side to another by the electric motor.

An actuator can go bad in of two ways. The blend door actuator is located behind the glove box and a sign of failure is an audible clicking sound when you adjust your climate controls. Sometimes the clicking will start randomly even though the ac controls are not touched and will often not stop. The actuator on my chevy impala is making a clicking noise under the right side of my dashboard by the glove compartment.

The clicking noise continues even after the car is off. A blend door actuator controls the temperature and the flow of the air in a car. Sometimes the fix needs recalibration and sometimes you need to replace the part that is broken. Is this draining my car battery.

First the electric motor can burn out rendering the unit non responsive so nothing changes when the temperature or. My car has an automatic transmission. Use a test light or power probe and verify that the proper signal is being received to the actuator based on your wiring diagram. A blend door actuator is linked to an air control door pivot found on the last drive of the unit.