I have a 06 TJ that the AC works sometimes then it won't. I checked the Freon and added about a half a can. It started working after I turned it to Max AC and also work on the other 2 settings. While driving it yesterday I got stuck in traffic and turned it on for a little relief. It wouldn't even get cool no matter where the switch fan was set. The Jeeps temp was about 220 and was slowly getting hotter, but cooled when I was able to move, yet no AC. While I was charging the system I noticed the fan never changed speed while reviving the engine it stayed constant. Any help, Thanks