additonal info
fan blower and sword
http://www.bmwe34.net/E34main/Mainte...ical/Sword.htm
and more
heater valve
http://www.bmwe34.net/E34main/Mainte...eaterValve.htm
heating problems
http://www.bmwe34.net/E34main/Trouble/Heating.htm
R134a retrofit
http://www.bmwe34.net/E34main/Upgrade/AC_upgrade.htm
parked ventilation
http://www.bmwe34.net/E34main/Upgrade/Ventilation.htm