I may be wrong here, but doesn't the klima relay only control the function of the AC compressor? That is, it has nothing to do with the control of the heater valve, fan speed, etc. The push button unit does this.
Your problem is that is going between heating and cooling erratically, right? That is, its opening the monovalve when you don't expect it, for example. Therefore, I'd look harder at the push button unit and its inputs. Go over the trouble shooting in the service manual. Check all the sensors. You might have an intermittent problem, making it much harder to track down. If my input is a repeat or I missed something, sorry about that... I haven't followed the whole thread. Jaime On Sat, Aug 11, 2012 at 9:21 PM, andrew strasfogel <astrasfo...@gmail.com>wrote: > SWMBO's 1985 300CD AC has started to behave erratically, blowing hot > air one minute and cold the next. I checked the monovalve (perfect) > and swapped in another ACC push button module. Nothing changed. > What's odd is that the ACC seems to be "hunting" wile operating, > clicking the compressor on and off and cycling hot and cold air. > Could this be the klima relay? The par number is 001-545-74-05. I > have two 1985 turbodiesels so could swap one out to test but I looked > under the hood and didn't see it. Where is it located? > > _______________________________________ > 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 > -- Jaime Kopchinski http://www.jaimekop.com/ _______________________________________ 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
