Okay after reading some tips on how to get heat in my 97 Mark VIII I did found the lever on the blend door. When I touched it a wire fell out it had a bend in the wire?? I don`t know what this is or where it went to however when I moved the arm to the right heat came out. So I decided to do and experiment while I kept my hand on the arm I turn the temp from 90 degrees to 60 I can feel the arm move and let cold air in when I changed it to 90 it only moved just a little bit just not enought to let in heat weird. I wish there was a way to get to it with out tearing the dash apart to get to it.