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Originally Posted by TX76513
Unplug the monovalve and see if you get "the green house effect"
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Help me out, which monovalve do I unplug?
Maybe if I put it this way it would be clearer;
Everything appears to be intact. With the heat set to max the heater valve is wide open, hot water is running through the heater core but the air coming out of the side vents is room temp at best. And I still would like to know if the vacuum line runs directly from the heater valve to the vacuum distribution model or just where it goes to from the heater valve. Vacuum diagram in the factory manual for the Tempmatic only shows the vacuum layout when the a/c is running.
Could this a blend air vent problem? If the monovalve that controls the blend air is not receiving any voltage won't it just stay where it was the last time it had voltage to it?
Just another train of thought if anyone has any comments on that angle.