There is this really wierd noise coming from the rear half of my 99 Prerunner. Once I get going about 10-15mph this noise starts coming from the rear that sounds like metal clapping metal. Its a rat tat tat type of noise but sort of high pitched. But as soon as I let off of the gas pedal it stops, instantly. But sometimes when I let off of the gas it squeals for a second or two and stops and then starts squealing again. The squeal almost sounds like a bad bearing but I have no idea on the other noise. Any ideas or have any of you encountered this problem before? Thanks guys <img src="/forums/images/graemlins/kewl.gif" alt="" />