Front ac is blowing warm air. Rear ac works fine. Thought mixing door was stuck...took dash apart...??? No leaks, motors are fine...doors I can see appear to be working fine....any ideas?

In searching for my own answers, I learned that on my Caravan, 97, the condenser is in front of the radiator. Did you ck it to see if it needs cleaned?
now i'm off to seeif someone can tell me how to clean mine!
The junk won't come out of it!
slp

I found that on my wifes van when that happens take the temp. control bar and slide it back and forth half a dozen times,then it works fine for awhile.