Join Date: Aug 2009
Location: Gaithersburg, MD
Actually a number of people have reported dirty and sticking butterfly valves in throttle bodies here on the fora. To clean it, you just undo the clamp and pull off the L-shaped rubber intake tube under the TB and spray liberally with TB cleaner. That will loosen the gunk that's been ingested and let the butterfly move freely again.
Owner of "Campbelle", a Brazen 2008 GXP ... with mods piling up...