A/C Problems with No Defrost - Ford Powerstroke Diesel Forum
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Old 06-11-2014, 08:59 PM
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A/C Problems with No Defrost

I have the digital thermostat controls in my truck but when i select defrost the air won't come out of the top vents in the dash but when i select the middle vents i can feel the air more as if the actuator is working but the feet is weak also. what part is this? I did a little research and found these year trucks don't run the A/C off the vacuum system anymore.
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Old 06-12-2014, 06:11 AM
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Most likely one or more of your blend doors is acting up and not working properly. As far as which one...hmmm good question...maybe someone else who's had the problem will chime in.
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Old 06-12-2014, 06:55 PM
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I took a look at the diagram and I see three motors for the dual zone ac. Anyone with any experience replacing these?
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Old 06-15-2014, 02:46 PM
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Bumppppppp
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Old 07-01-2014, 07:28 AM
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no one can help?
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Old 07-18-2014, 03:45 PM
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bumpppppppppp
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Old 07-19-2014, 06:14 AM
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There are 2 blend door actuators on these trucks with the dual climate controls

One is at the base of the dash in the center which is easy to spot if you look up underneath
The second one is buried behind the radio and is only accessible by removing the pass side air bag , radio and vent tubes

To check and see if you have actuator troubles
Run a self diagnosis of the system by pressing and holding the defrost and off controls release and hit the auto button within 3 seconds

And the end of the test it will list a code if there is a problem

22 66 is the actuator code

Last edited by Ranzan; 07-19-2014 at 06:18 AM.
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