Our church bus is a 07 E350 Super Duty and the A/C works great except when your going up a hill, or put the motor in a strain, then the air stops blowing out of the vent's and goes to the floor and it switches from cold to hot. We have had it to 2 shops and neither could figure it out. Any ideas as to what to check?

 

Hi Wendell,

There was a big discussion about this here:
https://www.ford-trucks.com/forums/1...efrosters.html

Also, you can search this forum and find some similar problems like this one. One of those discussions will have the answer.
Hope that helps.
jim