Fix / Replace 4 port client control valve
Thread Starter
Cruising
Joined: Feb 2005
Posts: 13
Likes: 0
Fix / Replace 4 port client control valve
Hi everyone,
So I am slowly working through the rebuild of my '69. Right now I am sorting the vacuum system, most of which is working awesome.
Where I am stuck is on the climate control valve. My car is a non-AC, so I have a 4 port valve. One of the ports is clogged / blocked. So I am at at the point of do I try to take it apart and figure it out, or get a replacement. I am happy to grab a "new" one, but all I see online are the 9 port units for the AC cars.
1969-1976 Corvette Climate Control 9 Port Valve Genuine GM 7309782 NOS
Thats the 9 port one. Some sites say it can be used in non-AC cars. So I have two questions. Anyone know where I can get a repo or replacement 4 port valve? Or, can I (and how do I!) use the 9 port for my non-AC setup.
Thanks!
So I am slowly working through the rebuild of my '69. Right now I am sorting the vacuum system, most of which is working awesome.
Where I am stuck is on the climate control valve. My car is a non-AC, so I have a 4 port valve. One of the ports is clogged / blocked. So I am at at the point of do I try to take it apart and figure it out, or get a replacement. I am happy to grab a "new" one, but all I see online are the 9 port units for the AC cars.
1969-1976 Corvette Climate Control 9 Port Valve Genuine GM 7309782 NOS
Thats the 9 port one. Some sites say it can be used in non-AC cars. So I have two questions. Anyone know where I can get a repo or replacement 4 port valve? Or, can I (and how do I!) use the 9 port for my non-AC setup.
Thanks!
Last edited by dmb; Apr 9, 2024 at 10:45 AM.
Team Owner
Joined: Jan 2006
Posts: 37,637
Likes: 3,118
From: Crossville TN
Some of those ports are "non-functional" and my be blocked by design...so they can not leak. The Chevrolet Chassis Service Manual has all the info on the heater/AC control system along with vacuum system diagrams that show which ports are operational.
Le Mans Master
Joined: Jun 2019
Posts: 7,670
Likes: 2,476
From: Indiana
this thread has multiple year vacuum switch fixes and bad replacements
https://www.corvetteforum.com/forums...on-switch.html
https://www.corvetteforum.com/forums...on-switch.html
