OK - I have a few problems and am going to start with this one after fixing some others already - wanted to know where you guys think I should start.

The car blows heat all the time, regardless of temp. dial. The AC is not hooked up, so that is a non issue (belt off compressor and it is not plugged up), but would like to just get it to vent normal air temp instead of hot for starters.

Center vents don't work

Should I start with the heat issue or the center vents?

I have read that the monovalve on the passenger firewall might be the culprit. How do I test this? Should this be my first item of interest or should I resolder the CCU?

I've read a lot in here about the various CC problems already but would like some direction from someone with more experience.

Thanks so much.
Tom