im having the same type of problem on my 94. Sounds crazy but my mechanic grabbed a long screw driver & put the tip against every peice of equipment on that side of the eng., that has a pulley. After about the third one he called me over & had me put my ear on the handle of the screw driver while it was on the a/c compressor, was a very loud version of the same noise i was hearing. Then he tryed the water pump & power stearing. The only one that i heard the noise from was the a/c compressor. The a/c compressor clutch was the problem. He also said if i tryed that in the future to find noises to be carefull or i would have a screwdriver as a perminent part of my head due to moving eng. parts
