I am freezing my butt off driving my car. I have no heat and I believe several folks on the list agreed it was the monovalve, but I just want to make sure. I am not getting any heat out the vents, but after long enough, I will get some (although not much) heat from the defrost vents. This is true regardless of which button on the control I push. Is this the monovalve?
Donald H. Snook 1990 300SEL 134K
