A/C not very funny

[Fourdownunder]

My a/c is doing some strange things,like moving the air flow direction to demist then to the feet then back to the face with out me doing a thing,very annoying when you wont the air in your face,any one else had this problem and if so how did you fix it.
98 sohc sports auto.
Thanx john

 

[sabatosh]

Sounds like a problem with the servo flaps inside the dash. They are operated by vacuum lines I'd believe and if there is a leak it will have trouble holding the flaps in anyone position so they may be cycling between them diverting the air with engine vacuum to different areas. I'm not a 100% about the specifics of your vehicle but you'll probably have to hunt down where those hoses go into the firewall and rip out the whole dash after safely evacuating the high pressure A/C refrigerant at an authorized A/C recycler center by technicians.

Then it's a matter of find the loose hoses or leaks what have you.

 

[BuffaloXplorer]

:fire: I resent the fact that you're asking a Air Conditioning question in January while most of us are freezing our a$$es off

Just kidding - we all choose where we live - although we didn't have a say in where we were born...

 

[Howard]

My guess would be that the vacuum reservoir is faulty and as you put your foot down and the engine vacuum changes so do the vent positions. The reservoir is a big plastic ball mounted between the inner arch and the wing on the right hand side. If you remove the two bolts at the front of the inner arch you can get to the ball.

 

[Fourdownunder]

To Buffalo,sorry mate but thats whats it like in OZ. Good one day better the next.

To Howard, Thanks mate that is exactly what is happening I will have a look.