secondary air pump is only on when the engine is cold and for about 2 minutes? Its also not attached to the drivetrain via any belts and wont fluctuate with the revs like the sound you have does.
that sounds a lot like power steering pump whine
bust out a long screw driver and start listening(careful not to get it tangled in anything spinning)
if you turn the wheel does it whine?
Last edited by SiR; 07-20-2012 at 12:05 PM.