John, I had the same problem.  New heater valve and careful realignment and lubricating the control cable solved it.  mcneely

---- John Rodgers <inua@CHARTER.NET> wrote:
>   I need to install a summer shutoff valve on the hose to the front
> heater core. I just cannot get the heat valve to close tight enough, and
> in this summer heat hot air blowing is a bit much. Is this procedure
> posted on a website anywhere? Got a link?
>
> Thanks,
>
> John
>
> --
> John Rodgers
> Clayartist and Moldmaker
> 88'GL VW Bus Driver
> Chelsea, AL
> Http://www.moldhaus.com

--
David McNeely