69 Heat & AC Control

[Dennis W.]

My '69 has a vacuum leak that I diagnosed with pump & gauge to be behind the firewall (in the cabin). So, I'm going to get into that. I have no idea where the leak is but do any of you have experience with this? Any surprises or things to check before diving into the center console controls, etc.? The car has AC. Thank you - Dennis

[Paul K.]

Re: 69 Heat & AC Control

Good luck, there are lots of vacuum hoses in the center console, When I did a body off on my 69 AC car, I found 1 hose that was pinched from the factory that operates a flap door.

Paul Klemetson

[Edward J.]

Re: 69 Heat & AC Control

Dennis I had a situation with my 72 and found that under the pass side wiper cowl area that a broken hose to that recirc. door. other wise the supply line heads through the firewall and feeds to the vacuum switch at console and branches off to each of the doors, my advice is to listen for a vacuum leak when you cycle the switch through each door operation.

[Dennis W.]

Re: 69 Heat & AC Control

Good advice, thank you.