VL Aircon always makes hissing noise and only comes out top vents.

[verey51]

The air con in my VL has started making a constant hissing noise no matter which setting you choose. Air only comes out the top vents where it defrosts the windscreen. Ive been told that it could be a vacuum leak. Any tips would be appreciated.
Cheers.

 

[Sabbath']

Behind the selector panel there are like 7 vac lines that go into it. One or more of these coming off or perishing would both account for the hissing, and the lack of selection.

There is a screw above the panel which when taken out will allow you to remove it and look. Be careful not to pull too hard as you may dislodge more.

 

[verey51]

Cheers, I'll have a look now


Sent from my iPhone using Tapatalk

 

[verey51]

Is it just as simple as pulling it out? I can see one screw at the top of the selector panel. Is there others?


Sent from my iPhone using Tapatalk

 

[Sabbath']

One at the top, then it should pull forward at the top, then unclip at the bottom. It will be a bit tight from memory, but again, dont reef it.

 

[Nut Kracker]

This may help you....
https://forums.justcommodores.com.au/threads/heater-unit-controls-vb-vl.4890