Testing an idle air valve...?

[clutterbucker]

How would one go about testing the idle air valve?

I remember doing it on my old 325i a few years ago...but it has since slipped my mind.

Searching revealed nothing.

[SchnellerVert]

Turn the key to the 2nd postion, you should here it buzzing. If no buzzing remove and clean out the interior with some parts spray. Install and repeat.

[clutterbucker]

Thanks a bunch