Triangle Radiator & Auto Service – When Air Conditioning Fans Slow Down

If the fan motor in your vehicle no longer works at the speed it used to, then it is probably because it is simply worn down from many years of use or has other problems that restrict proper airflow. In the event the fan makes noise when it’s set at higher speeds but only a minimal volume of cooled air is coming out of the vents, there’s a good likelihood that the fan’s motor is ok and the problem may be that the plastic blend door is stuck in the wrong position or broken.

Vehicle Air Conditioning

Plastic blend doors open and shut based upon which mode the climate system is set to – air conditioning or heat – to direct where the airflow goes as well as the temperature of the air. When the vehicle’s air conditioner is on, electronic blend doors are made to shut heating vents from the motor so that the cooled air will only flow into the vehicle’s interior cabin. If a plastic blend door for cool air is open just partly, the fan motor might make some noise, yet just a minimal amount of cool air will make its way into the interior.

Actuators that set when the plastic bend doors open and close can begin to malfunction and in some other instances the bend doors can get stuck or break. Some of the time this can be a relatively quick repair, but usually, it will call for expert service to identify the problem followed by removal of the dashboard to perform the replacement. When it comes to automatic temperature controls, sensors that signal an electronic control unit how to set airflow also can falter, and the result might be lack of cooled air directed to the vehicle interior.