My 98 4.6 is having some ac problems. It blows cold air on max ac at low setting but when the fan is turned up above low it starts to blow hot air. As there someone with the same issues that can send a link to a thread? Or does anybody know what's going on with my ac

 

Sounds like the bled door is floating, on its own, to the heat position. There is a quick fix out there so complete disassembly of the AC plenum chamber can be avoided. Use the search button to locate the topic.

 

Thanks hopefully it is the blend door seems like the cheapest fix out of all the thing that could be wrong with it