I had this issue a couple months ago and it appears to have come back. The pulley/fan both stop moving. Sometimes when revving it moves just barely...and it was also making a thumping sound followed by an odd wobble for just a second or two. From what I've read you have to replace the entire pulley/assembly that mounts to the compressor bracket (or something similiar to that) -- does anyone know what part # that assembly is or any way to fix it? Also, it has a new fan clutch.

94 cherokee 4.0

 

Any ideas? I will probably hit the JY tomorrow...last trip proved to be unsuccessful as all the 4.0's were gone :/