So this morning took the LS to get tinted, and after leaving, I now have an issue. AC blew cold through all vents yesterday in the 2.5 hour drive home, and all last night when I went out to dinner. Now today here's what its doing: Set to cold (16 degrees both sides) AC on, Circ on: Left Driver side vent vent: Cool air (not freezing cold) Middle two vents: Cool on top part, hot on bottom of same said vent. Right Vent Passenger side: Very warm air. When I raise the temps to Max heat (32): all vents blow pure hot. 2004 Lincoln LS V8. Any help is appreciated as always fellas. Probably a common issue. But it would help to know where to start.