Hi Vic,
If you are not getting heat because of air trapped in the heater core, could also be your bleeding issue from your other thread. Other than that:
I would first think the heater valves have clogged. They say that some have a fine mesh screen that clogs. None of the ones I opened had those screens. By default they are supposed to let the water pass so trapped air/clogged heater valves.
95 E34 530I V2.37
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