Hi Merv - your symptoms, I meant the MB
, (yes) was like my dad's before he had the fuel pump changed. The mechanic said something about the fuel pump not functioning as efficiently as it should, i.e. not delivering the kick when more fuel is needed - thus he changed the fuel pump. All was well after that. Then again, dad drives a 260E W124 which might have some difference, though I dont think so.
Do let us know, Merv.
Am surprised your MB does not come with a idle control relay. Am gonna replace mine soon and see if there's any marked difference. Will post you on this in due course ... like next week?