Hello, I've only owned my 97 Escort for a few weeks but I have noticed that at times it makes this odd noise from the harmonic balancer area, that will go away if I drive/continue to drive the car for a minute or two. The video basically explains the sound perfectly, and it seems to come from the harmonic balancer area. It almost sounds as if the timing cover were rubbing the belt or balancer, but I can't see how it could do so only intermittently (that and its tight as far as I can see). When you first listen to the video it may sound like a knock or something internal but if you listen closely it almost sounds like plastic or something rubbing on a gear. Any help is appreciated, thanks!