On Thu, Nov 17, 2011 at 3:26 PM, Peter Frederick <psf...@earthlink.net> wrote: > The blower is behind the right hand side dash vent. Test by seeing if a bit > of tissue paper will stay put on the temp sensor grille beside the sunroof > switch. >
Well, I may have to eat my earlier words to Allen---the blower failed the tissue-paper test. I think I changed one at one point before and found it straightforward but a real knuckle-skinner. I'll swap the one from the parts car and see what happens. > I would check the temp sensors for correct resistance at the plug, it's > possible you have one gone wonky so that the PBCU gets a "hot air in the > duct" signal. Usually the evaporator sensor or the heat exchanger sensor, > both accessable without major disassembly. > I've tested the thermistor in the overhead console (behind the aspirator vent) before, and I know where the one for the evaporator lives (next to the evaporator!) but where and what is the "heat exchanger sensor"? Never heard of that one. Alex _______________________________________ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
