ok its summer in ohio an my ac is removed an about a week ago my deforst is blowing air even when its turned off....its hot as hell....an when you do turn the *** to lets say feet it stays on defrost an it sometimes will switch by its self an go to face an back to deforst....any ideas

 

Vacuum issue. All the vents are vacuum controlled, except the blend door..... that has a little servo motor under the heater box that runs it. Does temp change with the ****?

 

temp **** hasnt worked since i got the truck...what confuses me is why the it will be turned off an blow out the defrost an still be turned off an switch to face

 

There is always air flow. The faster you go, the more air you will get. Unless you turn the whole system completely off...... (turn the vent selector to "off", if yours has that.....) There will probably STILL be some airflow though. The cab is not completely sealed, the government wouldn't like that. (and on a long enough trip, neither would you. )

 

That's what I'm trying to say is even with the selector on off quite a bit of air comes thru the defrost an will randomly switch to face vents

 

You have a vacuum/controller/actuator issue then. Trouble is, to figure it out, need to pull the dash.....