Heat/AC Only out from Top & Bottom - Not Middle

[Blakthorn]

Anyone care to tell me the cause of this problem?

Air condition and heat won't come out of any of the middle vents (driver side, center column, passenger side) but it will work coming out of top (by windshield) and floor.

Problem / Solution? thanks..

 

[RacEoHolic330]

sounds like a cracked vacuum line to me.

 

[PuterAmI]

Delete me... and me too..

 

[PuterAmI]

Delete me... Stupid IE.

 

[PuterAmI]

Vacuum for your cabin controls are sourced at the vacuum tree on the driver's side firewall. It travels across the firewall with a hard plastic line. It ends at the three-way check valve. The two exits go to...

1) Passenger fender reservoir (WOT source)
2) Cabin controls

More than likely you have a cracked vacuum line, or the source line that goes into the cabin has come off the controls.

 

[jrichker]

See the following website for some help from Tmoss (diagram designer) & Stang&2Birds (website host) for help on 88-95 wiring http://www.veryuseful.com/mustang/tech/engine/

Diagram courtesy of Tmoss & Stang&2birds