ac gone wrong

[joewhite]

my air is blowing out ac vent while in the defrost setting, is this an ajustment problem or broke part or a bad diafram,

 

[89Suburban]

That white plastic clip on the hinged flapper door for the vents, they are known to break and the vent door will stick open. If it is not that, then it could be the diaphragm that controls the floor to defrost door. That is to the right of the go pedal. Also could be the control itself or one of the vacuum lines.

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[joewhite]

that white plastic clip on the hinged flapper door for the vents, they are known to break and the vent door will stick open. If it is not that, then it could be the diaphragm that controls the floor to defrost door. That is to the right of the go pedal. Also could be the control itself or one of the vacuum lines.

You must be registered for see images attach

plastic part is good and have already changed the controller will check the door diapham thanks,

 

[89Suburban]

Ok, let us know how ya make out.

Also Joe, that door with the white plastic piece, did you physically watch it and see if it is moving with the controls?