belt

FYI, post questions like this in the OEM forum next time. This is not a question pertaining to a modified XJ.

The squeaking is coming from your serpintine belt. It's the big long belt that runs all over the front of the engine. Check the underside for cracking and then tighten it. You could probably do it yourself, go get a Chilton's manual and it will walk you through it. Otherwise, a shop will probably do it for next to nothing.
Hope that helps.

a/c compressor may be lazy due to lack of lubrication/wear. Mine sticks once and a while and smokes the belt,and I shut it of

If you pull the belt to inspect don't forget the Idler pully mine sounded like straight metal on metal screaching one time. Good thing was that I already knew it was going and had a spare.

yah like if i look under i see one of the pullys and it kinda makes a weird noise also. but now i know it that or the belt hopefully.

Your bearings could also be going bad, my water pump's bearings were going made and making a terrible screeching noise.

yah i think ill just take it to someone to look at it.