Been reading the postings on the A/C Heater issues. I have a 1996 Explorer with about 65K miles. In early 2000, I noticed that it was only blowing hot air. I had it checked out and Ford Service told me it was the blend door actuator plentum that was cracked and would cost about $750! I decided not to get it fixed since it was winter time. In the summer, I realized that the Max A/C blew out cool, a/c air, so I used that in the summer. Just a couple days ago, my Max A/C stopped working, and the truck is blowing only hot air (even with the controls set to "off" - hot air is blowing out of my floor and at the windshield). There is a TSB (Technical Service Bulletin) written addressing the issue (#97-24-25), but Ford still will not pay for it. I heard that Ford actually mixed up the doors for the Automatic and the Manual Temp. systems which caused the blend door actuator to fail prematurely. I would think Ford would assist in the repair cost since it sounds like a manufacturing defect. I have written to Ford, and they turned my request down. Has anyone had any experience with this issue and received some assistance? Would love to hear some advice as the repair cost is out of sight, and it's 90 degrees in Michigan right now!! THANKS!!