ROCK HARVEY
Full Access Member
In addition to cleaning out the blower, check the actual vents. Mine had a mouse nest in the driver’s side!
I have manual control hvac, so I have two mechanical cables, one for the blend door, one for which vents it blows out of, then the physical button to turn the ac on and off. Then I have another lever just for fresh air or recirculation.The defrosters are the default setting and will be enabled if NO Vacuum is present. You should feel air through the defrosters no matter what setting you have. Make sure you are getting vacuum to the vacuum diaphragm.