I've had this loud very odd squeal/chirp and i can't locate where it's coming from. I've searched the forums as well as Youtube to see if anyone has a similar sound but i can't seem to find anyone who has. It sounds like a pulley or tensioner but i had both replaced a few years ago. It seems to be constant, doesn't seem to speed up with the engine RPMs so I'm stumped. if anyone has any ideas i'd appreciate it. Thanks in advance.