I've got an annoying issue that isn't really a problem as of yet but it
may become one later.
I have an 84 Westy (68k original miles) that does this:  Whether cold or
warm, at idle it acts like it wants to stall but something catches it
before it drops in rpms.  It idles at about 900 rpms and then you get
this subtle rumble that you can feel for a split second as if it wants
to stall but it catches before it can fall even 100 rpms.  I've
disconnected the Idle control unit and that doesn't seem to change
anything, and I keep reading that there is an idle stabilizer valve
somewhere but I can't find it.  I've looked behind the passenger
tailight but it's not there.  Help me out oh great vanagon gurus.

Dave