AO Silver Member
Join Date: Aug 2010
Location: United Kingdom
Firstly is it a Ph 1 or 2. If it's a ph 1 you can give the ICV a tap on the top, that sometimes works, if it's a phase 2 the ICV cannot be cleaned and replacement is required, they have been hard to come by, but a recent post on this subject has found a supplier.
Check for air leaks, split hoses, check your air filter, sticking butterfly etc as you have probably read.
Try the throttle re-set proceedure, this worked for me on ph 2 1999 Spider, when it was bouncing around. It a case of eliminating each element of this common problem. good luck and let us know how you get on.