Trippysmurf

I have a 1998 grand cherokee laredo zj 5.2L V8. I am getting a really bad squeak from what i figured was the tension pulley assembly or something. So I replaced the entire assembly. Worked for an hour or so then came back. Figured maybe just maybe it was the idle pulley. They had it in stock so i replaced that. No luck still. Took it to a mechanic and he said he polished the pulleys off and it worked for about an hour then BAM it was back. The A/c compressor pulley looks like it was hit with a hammer by a previous owner. As I have already replaced the belt with a new gates I figured I would ask here as since it is oem ac compressor i was debating just saving up the 200 bucks for a new compressor entirely rather then just the clutch assembly part......What do you guys think?

Edit:I should meantion that the loud squealing sound is a very very loud high pitch squealing that increases when i rev the engine.If the engine keeps revving at a very evry low rev the squeal will NOT be present. I believe it was around 2000 RPM that the noise starts

Creature85

Take your serpentine belt off and spin all your pulleys. If one is bad you should feel it catch

vin007

I had to replace the idler pulley because the bearings inside the idler pulley were fried.the rubber seal was GONE and the bolt holding the pulley was stripped..bent and well useless. Picked up new belt, idler pulley and now no more squeak.