I am also interested to hearing if anyone have solved the surging problem. My car does the same thing as discribed by djimmy31.
My solution so far is to drive with the ICV disconnected.

Hurshi

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1989 230E, 8v, 166.000 km, updated to 94/95 trunk & hood
2002 Daewoo Nexia 50.000 km
Sold:
1987 VW Jetta GLE 16V, Recaro seats
1982 Volvo 240 DL (lovely car!)
and few more american cars.