I took out my ICV to see if that was perhaps a cause of my idle problem.
After cleaning it out and spraying WD40 I have noticed that the plunger does not move out, no matter how hard I pull. The plunger is positioned at the length specified in the Haynes manual.
Also, I read somewhere that you could test it by plugging it in and sitching the ignition on (not starting it though) and the plunger would move - mines didn't.
Does this sound like it needs replaced?
It's an Astra x16szr 8V by the way.