Hvac question

[Greg5OH]

I need it to default to the defrost/Foot position. I mentioned it is stuck on defrost, and my feet are cold.

 

[Greg5OH]

ANy one know if I can manually set it and keep it at the Floor/Defrost position?? I have a poor understanding of how the whole system functions together.

 

[OLDBULL8]

Greg, here an 89 vac circuit, yours can't be to much different.

 

[Greg5OH]

thank you that is very good! SO it looks like I need to get the left most motor (floor/def otor) to stay in the middle position. Is this motor located behind the radio/ in the middle of the dash?

Outside air motor/white line is inside the engine bay. I have that one manually set to recirculate cabin air.
Panel/defrost motor is default set to defrost aka blocking air from coming out the face vents.
so yellow line is what i need, and somhow keep the door in the middle.

What does V and NV stand for?

 

[OLDBULL8]

I would think V= Vacuum---NV= No Vacuum. Don't know where the motor is, never had to mess with the system.

 

[Greg5OH]

hmm, so the motor in question, has PV..partial vacuum on it to hold it in teh middle position? lol shiet what is partial vacuum?!