HVAC blend door actuator location?

Could be the air blend door mode actuator problem. Here is a guide to help you see what you are in for when doing the job and diagrams below to show you how to replace the actuator in your car:

https://www.2carpros.com/articles/replace-blend-door-motor

Mode door actuator.
The single mode door actuator is located on the driver side end of the heater-A/C housing unit, close to the top of the distribution housing.

Check out the diagrams (below). Please let us know what happens.

Cheers

Hi

I suspect the blend air door actuator isn't working properly. The actuator itself may be bad or you may have a door hanging up.

The actuator is electric. Here is a link that explains how in general one is replaced and common symptoms. Take a look through it.

https://www.2carpros.com/articles/replace-blend-door-motor

Here are the directions specific to your vehicle for replacement. The attached pics correlate with the directions.

The single zone heating and air conditioning system is equipped with a single blend door actuator. The dual zone system has two blend door actuators, one for the driver side blend air door and one for the passenger side blend air door. The same service procedures can be used for each of these actuators.

1. Disconnect and isolate the battery negative cable.
2. Remove the instrument panel assembly.

Fig. 14 HVAC Housing - Dual Zone Shown (Typical - Single Zone)

Pic 1

3. Disconnect the HVAC wire harness connector for the blend door actuator from the actuator connector receptacle..
4. Remove the screws that secure the blend door actuator to the distribution housing.
5. Remove the blend door actuator from the distribution housing.

INSTALLATION
1. Position the blend door actuator into the heater/air conditioner housing. If necessary rotate the actuator slightly to align the splines on the actuator output shaft with those in the blend air door linkage.
2. Install and tighten the three screws that secure the blend door actuator to the distribution housing. Tighten the screws to 2 Nm (17 in. lbs.).
3. Reconnect the HVAC wire harness connector for the blend door actuator to the actuator connector receptacle.
4. Install the instrument panel assembly.
5. Reconnect the battery negative cable.
6. Perform the heater-A/C control calibration procedure.

Let me know if this helps or if you have other questions.

Take care,
Joe

If both heater core hoses are hot, then the blend air door actuator is bad. It is responsible for the air temperature coming into the cab.

Here is a link that shows how one is replaced:

https://www.2carpros.com/articles/replace-blend-door-motor

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Here are the directions specific to your vehicle for replacement. The attached pic correlates with the directions.

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2002 Dodge or Ram Truck RAM 1500 Truck 4WD V8-5.9L VIN Z
Blend Door Actuator Replacement
Vehicle Heating and Air Conditioning Air Door Actuator / Motor Service and Repair Procedures Blend Door Actuator Replacement
BLEND DOOR ACTUATOR REPLACEMENT
REMOVAL
The single zone heating and air conditioning system is equipped with a single blend door actuator. The dual zone system has two blend door actuators, one for the driver side blend air door and one for the passenger side blend air door. The same service procedures can be used for each of these actuators.

WARNING: ON VEHICLES EQUIPPED WITH AIRBAGS, DISABLE THE AIRBAG SYSTEM BEFORE ATTEMPTING ANY STEERING WHEEL, STEERING COLUMN, OR INSTRUMENT PANEL COMPONENT DIAGNOSIS OR SERVICE. DISCONNECT AND ISOLATE THE BATTERY NEGATIVE (GROUND) CABLE, THEN WAIT TWO MINUTES FOR THE AIRBAG SYSTEM CAPACITOR TO DISCHARGE BEFORE PERFORMING FURTHER DIAGNOSIS OR SERVICE. THIS IS THE ONLY SURE WAY TO DISABLE THE AIRBAG SYSTEM. FAILURE TO TAKE THE PROPER PRECAUTIONS COULD RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT AND POSSIBLE PERSONAL INJURY.

1. Disconnect and isolate the battery negative cable.
2. Remove the instrument panel assembly.

Fig. 14 HVAC Housing - Dual Zone Shown (Typical - Single Zone)

Pic 1

3. Disconnect the HVAC wire harness connector for the blend door actuator from the actuator connector receptacle..
4. Remove the screws that secure the blend door actuator to the distribution housing.
5. Remove the blend door actuator from the distribution housing.

INSTALLATION
1. Position the blend door actuator into the heater/air conditioner housing. If necessary rotate the actuator slightly to align the splines on the actuator output shaft with those in the blend air door linkage.
2. Install and tighten the three screws that secure the blend door actuator to the distribution housing. Tighten the screws to 2 Nm (17 in. lbs.).
3. Reconnect the HVAC wire harness connector for the blend door actuator to the actuator connector receptacle.
4. Install the instrument panel assembly.
5. Reconnect the battery negative cable.
6. Perform the heater-A/C control calibration procedure.

__________________________________________________________________-

Let me know if this helps or if you have other questions or need help.

Joe

Check for a vacuum leak first, start at engine and work back to heater control then vacuum motors. Your mode door may be stuck in one position blocking air exits. See pic

Hi amckey, Welcome to 2carpros and TY for the donation

Lets start by checking the air blend door/actuator

Air temperature sensor:

Not listed on having a pollen filter in Mit1 or Alldata

Hi,

I need to know what is happening. When you say cable, are you referring to an electrical wire or simply a cable that is used to move things?

Also, when you say the A/C doesn't work, do you mean the airflow direction is wrong or the A/C compressor isn't engaging?

Sorry for the questions, but the blend air door actuator (which controls the air temperature entering the vehicle) is electric, so that wouldn't be a cable. The actuator that is responsible for airflow direction (defrost, floor, mid) is actuated by engine vacuum. That is why I need to know what you are dealing with so I know how to help.

If you look at pics 1 and 2, they show the actuators I'm referring to. If possible, take a pic of the cable you are referring to so I have a better understanding. It may help.

Let me know.

God bless,
Joe

This sounds like the temperature blend door actuator needs to be replaced. Here is a guide that will show you step buy step how to do the job and with diagrams below to show the location for your car:

https://www.2carpros.com/articles/replace-blend-door-motor

Check out the diagrams (below). Please let us know what happens.

Cheers

Your truck does not have a heater control valve it has a temperature control actuator that does the same thing. Here is a guide to help you see what you are in for when doing the job.

https://www.2carpros.com/articles/replace-blend-door-motor

Also check for vacuum at the HVAC check this guide that shows what to look for.

https://www.2carpros.com/articles/air-vents-stay-in-the-defrost-position

and

https://www.2carpros.com/articles/car-heater-not-working

Here is the location for your truck (below)

Let us know what happens and please upload pictures or videos of the problem.

Cheers, Ken

The AC fan or the actual interior AC is not cooling on the passenger side?

If you mean you are getting cold air on the drivers side but not the passenger side the most likely culprit would be the blend door that controls the air temperature. They are known for losing the foam off the front and not closing properly. That would be number three in the image. To actually test is you need a scan tool with bi-directional control.
I would be very sure it is the blend door as replacing it requires removing the dash to get to the actuator on the top of the case.

I am thinking you have an issue with the actuator or the door itself.

Do you have a dual zone or single zone temperature control?

If you have a single zone, then I suspect you have an issue with the rod that is connecting the blend doors to the actuator. Basically, they use the same box for dual and single zone, but connect the doors on a single zone with a rod that you can see in the picture below.

Also, you could just have a door issue as these crack and fail all the time.

Here is a site that sells repair kits with metal doors so that this does not happen again if this turns out to be the issue.

https://www.blenddoorusa.com/

Unfortunately, the noise on all settings except defrost typically means the fresh air door is not sealing but let's start with this and go from there.

Thanks