I've tried to find a vacuum leak today without luck:( I checked the throttle shaft for ply, but it was not loose, the shaft itself is not sticking, it returns as it should. I've also tried spaying it with carb cleaner to be sure.
But the problem seems to be worse now, it can suddenly stay at 2000rpm for a good while, and then return to idle. The problem seems to be worse when the engine has warmed up:-\
I have the Haynes repair manual, but it does'nt contain a schematic for the vacuum system for the ea82, I'm shure it has been posted several times here, but I can't fint it. If anyone can provide me a link, it will be much appreciated:D