my front a/c vents only blow hot air. I have an a/c thermometer and I checked it a week ago, it would blow 70-80, now its blowing 100 or so (which is about 5 degrees over outside ambient) but it still blows 45-50 out of the rear vents. Are these systems not connected? I figured they were but perhaps not if one works and the other doesn't.

thanks

nevermind I figured it out on my own.

Go on then - what was it????