Blend door actuator ? How many ?

[BlackoutExpy]

I changed the actuator behind glove box but was still clicking.After changing it my air is always hot. With old one sometimes I would get lucky and cold air would come out. Now its hot always. I have dual climate is there another blend door actuator?

At one point I did remove the top actuator and left nothing in there and it was still clicking. I did remove the white shaft from old actuator and manually moved it and seems to move freely . What can it be I check all fuses and they seem good too. Thanks

 

[Ixlr8nAk]

You did this? https://www.youtube.com/watch?v=y2Bh4pN27zI. and still have the click. I have the dual as well, but not been into it. Yet.

 

[BlackoutExpy]

You did this? https://www.youtube.com/watch?v=y2Bh4pN27zI. and still have the click. I have the dual as well, but not been into it. Yet.

Yes thats the one I changed. I just read about one being under center console something like that. Im in Texas and its hot so I guess I might go for it since its hot these days

 

[Hamfisted]

Yes, if you have dual zone climate control, the driver's side blend door actuator is located at the bottom of the HVAC box, just in front of the center console.




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[Ixlr8nAk]

Would be great to see pics. of the location as you get to it. Best wishes.

 

[BlackoutExpy]

Well I got to it … its horrible ! Lol
Question though my ac compressor doesn’t seen to be kicking on . How can I test my ac relay ? Is there another relay in car i can exchange it with to see if thats the problem

 

[Hamfisted]

Well I got to it … its horrible ! Lol
Question though my ac compressor doesn’t seen to be kicking on . How can I test my ac relay ? Is there another relay in car i can exchange it with to see if thats the problem

They're all horrible ! Do you have a HVAC gauge set so you can check your system pressures ? Or, if nothing else get one of those Pro A/C kits from Walmart so you can at least see the low side pressure.



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[Kenerator]

Yes, if you have dual zone climate control, the driver's side blend door actuator is located at the bottom of the HVAC box, just in front of the center console.




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Hi Hamfisted, I have an EB 5.4 with the dual zone climate control. Are the actuators the same part number? I just replaced the one on the top of the HVAC housing (kinda behind the glove box). Still have door bumping sounds. Maybe I changed the wrong one?

 

[whtbronco]

Temperature Blend Door Actuators
The DATC system utilizes two temperature blend door actuators to control two separate temperature blend doors that independently vary the LH and RH side temperature settings, as desired. The temperature blend door actuators:
- are located on the plenum chamber.
- move the temperature blend doors on command from the DATC module.
- contain a reversible electric motor and a potentiometer. The potentiometer wiper is connected to the actuator output shaft and moves with the output shaft to indicate the position of the temperature blend door.
- receive a reference voltage to one end of the potentiometer. The voltage available at the wiper indicates the position of the potentiometer. The expressed value of the actuator wiper voltage is sent to the DATC module and is matched with an expected wiper voltage value. The DATC module then drives the actuator motor in whichever direction is necessary to make the actuator wiper voltage match the expected DATC module wiper voltage value.

Vacuum Control Motors
The three vacuum control motors have the following characteristics:
- They are actuated by the ATC solenoid and manifold based on input from the DATC module.
- They position the mode doors to direct system airflow to the vehicle interior as determined by the DATC module settings.
- The air inlet door vacuum control motor is a single-diaphragm actuator with a single vacuum source.
- The airflow mode door vacuum control motors are double-diaphragm actuators with two separate vacuum sources to allow the actuator to fully retract or partially retract.
- When vacuum is applied to both vacuum sources, the actuator will fully retract.
- When vacuum is applied only to the partial stage vacuum source, the actuator will partially retract.


Part numbers:
Defrost Actuator 8L8Z19E616C
Recirculation Actuator 7L1Z19E616E
Temperature Blend Actuator 7L1Z19E616C