Got the dash out of my 78 today and found some problems with the heater/ac vacum hoses. Hope someone on here can help. 78 camaros with ac have a vacum actuator behind the pasengers side kick panel. there is a vac hose that runs to it, but just before it gets to the actuator the hose has anothe hose T'ed into it. Where does this hose go?

Second there is a hose that go into the firewall behind part of the heater and comes out behind the engine head on pasenger side. but it has been cut off at the firewall. Where is it suposed to go? The second pic shoes this hose, I pushed it back through fire wall to look at it.

Where does the heater controls get vacum from to operate?
All other hoses seem to be hooked up fine.

 

Let's see if this helps:


Vacuum is tapped off engine vacuum, usually at the accessory vacuum point, but any full vacuum will work.

 

The one with the big rubber goes to the manifold vacc. that is the supply. The TEE goes to the flapper thing in the pass.side cowl.

 

Thanks guys for the info. Val thanks for the digram. Mine does not have quit as many hose as the pic shows so maybe someone tore some out. Time to start digging! Thanks again

 

Shal,
If you need pics mine is all opened up. I can shoot in the am.

 

Sorry, hope you get things sorted out!

 

The info you guys gave me and the diagram, I got it figured out. I had one hose broke that went to the cowl flapper and I used a peice of an INK PEN, ink tube to use as a splice for that hose. And got the other hose hooked to the manifold with a temporary adapter Which I wll go and get a better one tomorrow.

Val, the diagram is different than mine but it was close enough to head me in the right direction. Thanks

 

Glad you got it!