Thanks fot answer!
After cleaning it with carburator solvent (it wasn't so dirty), I tried it with 12V voltage from the batterie - it opened and closed (like) normally - quick.
I've just come back from driving and notice also this problem when pressing the clucth for gear change when motor in not fully warm - this is always when motor is more or less cold or after 2 or 3 miles. But when fully warm, idle drop is much smaller when pressing the cluch for gear changing or stopping.
Only IAC is around 500 $ in Europe, so I wouldn't like only to try with it first, unless it is the reason for more and more anoing problem.
Best regards, Bob
Tuesday, July 19th, 2011 AT 7:28 PM