97 Ram A/C question

Good luck finding the source, if you google "crazy vents" you'll get lots of hits. Also some years have a vacuum can under the windshield wiper housing. You have to pull the wiper arms and the black plastic cover. this area fills with water / ice sometimes and can crack the vacuum can. Also these heater/ AC units are prone to door failure in the unit. Dodge/ Chrysler should have their asses kicked for saddleing us with this junk.