or, do as I did and replace the air idle valve w/ a plumbers valve..Works great

http://www.mbnz.org/forums/forums/thread-view.asp?tid=1208630&posts=12&fid=11

Jonathan

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Blue Ridge Mercedes
Jonathan Hodgman
http://www.blueridgemb.com/
Enthusiast Service, Restoration & Tuning.
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Located in the Atlanta area
Specializing in all pre and post merger AMG's including Hammers and DOHC M117 engines.
Mercedes Repair Atlanta