take the power steering belt off and start the engine...see if the noise is still there.

if the noise is gone, it is probably either the belt or the bearing in the idler pulley ($9 and 20 minutes to fix) or possibly the bearing in the pump itself. turn both pulleys by hand and see if they spin easily.

if the noise is not gone, take off the fan belt and start the engine. again, see if the noise is gone. if it is, you found the problem.

stan

1994 4x4 22RE W56 truck