AC diversion issue
Thread Starter
Instructor
Joined: Jul 2011
Posts: 142
Likes: 1
From: Fort White Florida
AC diversion issue
I recently bought a 79 Vette it is my first. I am having an issue with the AC. When I turn it on the air comes out of the heater vents instead of the ones in the dash. When I first got the car 5 days ago it would work properly half the time now it just comes out the heater vents. I don't think it is a weak vacuum problem because the headlights pop right up. I am thinking it is the Control Vacuum Valve. If I am correct in my diagnosis how difficult is it to get to the valve. I am assuming it is behind the dash console or under the shift console. Any help would be appreciated.
Rick
Rick
Le Mans Master
Joined: May 1999
Posts: 6,692
Likes: 29
From: Texas
My 82 did that recently. Looking everywhere under the hood, I noticed I snapped a small hard vacuum line disappearing into the firewall. Sliced it with a piece of rubber tubing and now a/c out the top vents again. I remember accidentally pulling is out several years ago and as soon as I saw the problem, know what to do.
Thread Starter
Instructor
Joined: Jul 2011
Posts: 142
Likes: 1
From: Fort White Florida
My 82 did that recently. Looking everywhere under the hood, I noticed I snapped a small hard vacuum line disappearing into the firewall. Sliced it with a piece of rubber tubing and now a/c out the top vents again. I remember accidentally pulling is out several years ago and as soon as I saw the problem, know what to do.
Last edited by Rick_V; Jul 4, 2011 at 05:32 PM. Reason: more info
