Hvac Heater Blend Door Actuator Function

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Hvac heater blend door actuator function. Left hvac heater blend door actuator fits 2005 2009 saab 9 7x acdelco gm original equipment a c vacuum actuators are acdelco gm original equipment a c vacuum actuators are a pneumatic servo mounted on the hvac housing that actuate or move the hvac doors or valves. A ford f 150 s blend door is the device that controls how much heat or ac comes through the hvac system. When in the full cold position all air is directed through the a c evaporator. When the knob is rotated to the full clockwise direction the air will be heated.

Auto heat built in heating systems have pretty much been standard equipment on most automobiles since the 1950s and 1960s. Then premium gpd aftermarket auto parts are right up your alley. Hvac heater blend door actuator by gpd. Want to keep your vehicle performing reliably.

A somewhat common problem in vehicles a few years old the heat and air system in your vehicle may be the victim of a faulty blend door actuator. Pen tooth pick small toy or bubble gum to name a few. It stayed that way for about 18 months. For the last 20 or 30 years in these trucks they have been prone to failure.

A plastic gear set is frequently rotated from one side to another by the electric motor. If the door is stuck the heater plenum with need to be removed and the problem resolved before installing the new unit. An hvac heater blend door actuator is what moves the blend door to divert warm or cool air into differ ent passages within the hvac system and keep the passenger cabin at the desired temperature. These obstructions can include.

Turning the temperature knob sends an electronic signal to an electronic actuator under the dashboard which then moves a door inside the heater box called the blend door. A blend door actuator is linked to an air control door pivot found on the last drive of the unit. After the blend door actuator was replaced the first time it worked for about a month then it failed again and then the hvac control module and the blend door actuator were both replaced but after about 3 weeks it failed again so i rigged up a coat hanger to manually open and close the blend door. If you cannot move the blend door an obstruction has gotten in the way of the door movement which will make the new actuator fail.

An actuator can become faulty if the plastic gear set turns out to be fragile and it breaks.