HVAC Controller Vacuum Sorce
Thread Starter
Safety Car
Joined: Nov 2008
Posts: 3,705
Likes: 550
From: Seattle Washington
HVAC Controller Vacuum Sorce
So I'm assuming that the Hose nightmare going into the HVAC Controller are all Vacuum Lines. So one of them must get its source from the Intake Manifold on the Engine. Any idea what the Vacuum Hose routing is ? When I replaced the Engine I did not hook anything up that wasn't necessary to make it run. My Controller is showing signs of failure and I'm willing to do most anything to avoid removing it !
Team Owner
Joined: Sep 2003
Posts: 25,330
Likes: 2,722
The grommet just right of center behind distributor and right cylinder head is harnesses and also the vacuum source for the AC (inside the car). The grommet opening is in this image posted recently by ChumpVette.
https://www.corvetteforum.com/forums...post1606152441
In the FSM you could likely use 8A-201-18 (Fig 37) as a reference.
https://www.corvetteforum.com/forums...post1606152441
In the FSM you could likely use 8A-201-18 (Fig 37) as a reference.
Last edited by WVZR-1; Jan 18, 2023 at 10:14 PM.
Thread Starter
Safety Car
Joined: Nov 2008
Posts: 3,705
Likes: 550
From: Seattle Washington
Ok, your responce and the link answer my question perfectly. I'm using a Super Ram. It sounds as though there might be a Check Valve probably to keep from blowing a line under the dash with a back fire. It sounds as though the line I want comes threw the Firewall.
