I live in florida, air is a big thing. When i first got the jeep the air blew only on the 3/4 setting. Didn't blow cold. Easy, some freon and it was perfect. About two months ago the 3rd setting went. And about a month ago the last setting went. I replaced the blower motor. Did nt fix the problem. So i replaced the blower motor resistor... I think. It was fixed. However a weeek ago the air stopped blowing. What do i do?!?!? I am out of ideas, the tubes are getting cool, just no air is blowing at all hot or cold.