I think I have the next generation of those parts in my 1984 300D. I think I get coolant flow through the heater core even when it's supposed to be shut off. I rebuilt the firewall valve a couple years ago but maybe it's not working right. I was thinking about installing some plumbing valves under the hood to shut it off all summer. Doesn't much matter if it leaks a little in the spring, fall and winter. Or maybe I should revisit that valve. Suggestions appreciated.
Jim
--- In diesel_mercedes@yahoogroups.com, "Nate" <vwnate1@...> wrote:
>
>
> Eh ;
>
> I had a buncha aluminum body ones , all tested and working fine , no one wanted them so I gave them all away after fixing up my '80 Coupe .
>
> Good riddance ! I learned how to make the wretched system work and next time (I hope there never is one) I'll go straight to the Unwired Tools Digital Servo Upgrade instead .
>
> -Nate
>
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