Anyone have a method to determine wether or not a belt squeal is from belts or bearings? I used aftermarket belts around 10,000 miles ago and I am getting squealing again. Increasing RPM's eleviates the noise as does belt dressing (temporarily). The power steering pump is adjusted to it's tightest position, so I can't put any more tension on that belt. I believe the belt tension is and was set correctly.