Ac problems

[shaunspengler]

I have a 1997 mustang gt i havent driven it for 6 months do to having my license suspended. So i take it out an start it up and put on my ac and it only blows air threw the top vent and it wont blow threw the main vents so i was wondering whats the problem if anyone could help thatd be really great

 

[trinity_gt]

Any work done to it while it was down?

You might check the vacuum lines at the upper plenum. Make sure they're all connected and tight.

The HVAC vents are vacuum operated. If a line is off the back of the plenum it may be the one that feeds the vacuum motors under the dash.

 

[shaunspengler]

You know what i did take off my intake manifold and i was gunna do a pi swap but didnt get the money so i put it back together but maybe i didnt put that line back on then thanks buddy ill check it out and let you know