Last post I spelled out the symptoms and the digitool readings which pointed me directly to a faulty throttle position switch.   I purchased a new switch (Dealer $77) and installed it Saturday.  The job was a piece of cake and while I was at it I cleaned everything I could get at with the stuff all removed (air box/AFM, throttle body) and lubricated the throttle "valve"  well (and the cable).  I put it all together and the van runs great.  Only problem I had was I apparently pulled the throttle cable to tight and on my test drive it some how tightened up and my idle went to around 3 grand.  Backed the cable off and all is well.  Back to loving my westy!
Nat
Seattle