I am supposing the Touring and Sedan have similar heating systems. There are two separate valves for the passenger side and driver side. They ar located on the firewall in the engine compartment in front of the driver. The auxiliary cooling pump is also in the same location. It is not difficult to replace the bad valve. Just make certain you clamp off the hoses leading to it before disconnecting them. That way you will minimize the chance for air getting into the system and causing subsequent bleeding problems. Getting the valve out is not easy, but can be done with patience. The whole job took about an hour in my case. There's a good post seomwhere with photos. I'll try to find it.
Originally Posted by
gwuisman
Hello,
Here in Holland it is freezing these days and my wife complained as passenger about freezing foots as the heating on her side only gives cold air wile the drivers side is nicely provided with hot air. The mechanic could not give a proper cause for the failure. Before he starts to rebuild my whole dash I would like some thoughts from this forum. I searched the FAQ but could not find any hint.
In my own search I noticed that the heating is working via a set of two cylinders (electrical valves ?) mounted on the back side of the fuse box. There, there is a vertical three pin connector. I don't know where the yellow cables are coming from. If I disconnect the connector, the passengerside gets hot air but the climat system doesnot work properly anymore. If connected I hear clicks and feel shocks through the cylinderset and hoses. Is that normal or does this point to an (electrical ?) failure in this set? Can these sets be replaced?
Has this set some infuence on the airco compressor? Sometimes I have to slow down because the compressor is getting on and off and causes irregulary working of the engine.
Thanks for your advice.
Gerard Wuisman.
Last edited by danzee; 01-30-2006 at 04:22 PM.
Dan Z Annapolis, MD BMWCCA Since 1986
Sharked E30, E34, E39sprt E46xit