BEFORE U REPLACE MOTOR, READ THIS AND SAVE MONEY...Great video, never thought sound was the motors, but in the center. What I found was the piece of metal rod from motor to divertor door causing the noise. The clip holding it broke. So as the motor spins that piece of metal is Jamming the motor making that clicking noise. Bad thing Honda doesn't sell those clips. Will have to buy Door Lock replacement clips from Oreillys or Autozone. I got lucky and honda tech had clip close to one broken. So I pushed in and took tiny tiewrap around clip and rod. Problem fixed.
So I have an 03. The issue I'm having is if the front is cold the back will only blow cold, if it's hot it'll only blow hot. Is that normal or should I be able to have front hot and rear cold if I want to?