I change the position for the air vents but no air rushes out. When I put it on defrost I can not feel any air coming out the windshield vents. If I close that and put it on forward vents, no air and the same if its on the floor vents. I can not feel the air rushing from anywhere. The blower motor is running on 4 and I can hear it but I can not feel any air rushing from any vents. I can feel some air blowing out the vents connecting the door vents.

what gives?