It is the same, on full hot or whatever the thermostat calls for.... I can hear something moving dialing up or down. Also, the fan will cut off if the cabin is quite warm, so at least one of the cabin temp sensors is good. It looks like there might be one behind the cluster, and another near the fan?? I'm not sure how to troubleshoot it further. I am thinking a temporary bypass of the monovalve with a length of heater hose would eliminate the possiblility of failure of valve #2, since it could be in question. It had been in a box for a long time, used, so could have failed after a week of work.
Ben