Every Jeep I've owned, and the several others that have been in my family have always put some kind of heat out, regardless of blend door position or climate control setting. I know how you feel. I believe it to be radiating heat from the transmission through the floor boards. Take off the doors and you won't notice the heat anymore.
1995 Blue YJ i-4 AX-5 33" Cepek Crushers on 2.5" Rancho lift - SOLD October 2010
1996 White ZJ i-6 auto bone stock
1987 Maroon YJ i-6 Auto (1.5" body lift. OME 2 1/2" lift. Rancho RS5000 shocks. Rancho steering stabilizer. A-Z Fabrication rock slides. More upgrades coming soon - LOL)
The "sideways" build thread: http://www.jeepforum.com/forum/f22/r...hread-2164793/