Yet another issue

this just started today. im getting a high pitch wirring noise from near the egr or behind the manifold. cant quite pinpoint exactly where but it is in that area. it sounds like something is spinning. can anyone gimme an idea? im gonna tear the whole thing apart tomorrow and sniff around. would be nice to have a lil direction. is there something inside the backside of the manifold near the firewall that could cause this sound? help please...
note: car still has incredible power, no loss there. everything mechanically is working and no codes.
in the area where the sound is coming from, new tps/iac and had the egr cleaned about a month ago...

hmmmm. did a little research and things are leaning toward heater motor. son of a...