Blend Door Actuator Clicking

Symptoms a blend door actuator is bad.

Blend door actuator clicking.

An actuator can become faulty if the plastic gear set turns out to be fragile and it breaks. Loud clicking tapping clacking noise coming from behind the dash related to the hvac operation. An actuator can go bad in of two ways. Here are some of the most common symptoms that a blend door actuator has gone bad.

If you hear a repeated light clicking sound coming from under the dash it can be a bad blend door actuator. The temperature change isn t necessarily a reliable indicator the clicking is the actuator trying to move past its limit so i imagine the air would still be pretty cold but maybe not necessarily. A blend door actuator is linked to an air control door pivot found on the last drive of the unit. 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.

Often adjusting the temperature settings ever so slightly can stop the noise temporarily. I am not responsible for any damages that may accure to the door motor or any other part of the system as a result from this trick fix alright. Vote up 0 vote down reply. A plastic gear set is frequently rotated from one side to another by the electric motor.

First the electric motor can burn out rendering the unit non responsive so nothing changes when the temperature or. 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.