You're car is equipped with a mono valve, which is an easy, inexpensive fix. Read halman2228's post.SanDiego - 3/25/2005 11:19 AM
I had the same problem on my 88 560sl. I needed a quick fix for this hot air inside the car in the summer. I jimmy rigged mine. I just pinched off the hose going into the firewall with some locking pliers.
You know I had that problem to and couldn't figure where the heat was coming from till I finally found it wasn't hearer heat at all it was engine heat coming though the fire wall though rust holes from the battery tray and a missing rubber guarmet (sp) near the driver side. I plug them all and no more heat in the cabin.I had the same problem on my 88 560sl. I needed a quick fix for this hot air inside the car in the summer. I jimmy rigged mine. I just pinched off the hose going into the firewall with some locking pliers.
I have the same issue (also posted in Help w/ Heater/AC), is there a way to test if a servo has failed (and not something else)? My climate options are currently off & defrost w/ full heat. ALTHOUGH I do see that the #9 fuse in my car is missing, does the servo get its power via that fuse? If so, I may be in good shape. Yes, I'm aware that a trip to the auto parts store would quickly answer my question but hoping a reply would give me more knowledge, haha.Thanks for the info...I have the same problem (1980 450sl). I just posted a question: "Help with Heater/AC" about my heater/ac not working, my question to you is, is this a connected problem or are we talking about 2 different issues with heater/ac?
We no longer carry remanufactured Servos, opting for the Servo elimination kit instead. We did carry them in 2005, when this thread originated.Hi Germanstar...I went to your Mercedes R107 Climate Control Parts parts list but not sure which part you are talking about as being the "servo" in this discussion...The ac servo and heater control panel are the same part number and looks nothing like what you descibed as "fairly large black part with connections for 4 water hoses and lots of vacuum hoses".
Thanks, please clarify.