Heat & AC
The heat is stuck on in my 1985 190e. I checked here in the forum and found that it is usually caused by the monovalve. Since I have the MB CDROM manual for this car, I looked it up on there too. I read that the valve is closed when there is vacuum to it, which leads me to believe that I either do not have vacuum to it or that there is a leak in the valve. Am I correct in thinking that vacuum to this valve simply operates a plunger type device? If so, since it is like 90 degrees here, can I do something to force the valve shut manually while I await the arrival of the parts to correctly fix it? It appears that while this valve is open, the AC compressor will not engage.. is that correct? Thanks in advance for help with this.