Removed the ICV last night, it was quite dirty even after thoroughly cleaning it a year ago.
Wasn't fully gummed up, but dirty enough to slow its movement. Gave it a good clean and its moving freely again inside the valve body now.

Since refitting it, all good so far.
Maybe its starting to get weak after 14 years/210,00 Kms' and a small amount of dirt is enough to slow its movement?

I'll see how it goes, maybe go for a new one next time, if it happens again.

__________________
2003 E53 3.0
2001 E46 330ci Msport
2001 E46 325i Touring wagon