As stated above. I have a heating problem during the winter months.
If I leave the control on the low fan setting and turn the wheel to max (red) I receive a small amount of heat coming through the system. If I go to Auto or High the air coming out turns cold and during extremely cold weather I don't get heat. I really don't know if the A/C is working well enough but I seem to get AC again using the low setting. I haven't had any reason to go to auto or high on the A/C setting.

I know my way around this car pretty well since I've owned for over 20 years and have done 95% of any service it needed myself. I have the tools and grew up around gas stations when that was the place to have your car serviced and repaired so I'm pretty good with tools.

The car itself is an engineering marvel as compared to American cars and seems to be built to last a life time but you just have to know how to care for it and work on it.

I'm assuming that the Head Control Valve is the cause of this issue. I guess my first question is where is it located? I assume it's under the cowling between the firewall and the wiper system. I haven't had the time as yet to dig into it but am curious if there is someone out there who has experienced this problem and has any suggestions on how to cure the problem since I do use the car during the winter months and would really like to have the heater working properly.
Thank you in advance for any assistance anyone can provide.
Bob Kane