Originally Posted by old_blue
what is angry birds? (jeep wise)
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angry sparrows site:Jeep Forum - Jeep Enthusiast Network
angry sparrows site:Jeep Wrangler Forum - Jeep Wrangler Owners Community
In short, its when the centering ball in the CV joint of the front DS starts going bad. If you have a greasable joint (which TJs don't from the factory IIRC) you can try greasing it and see if its still good. If you have a non-greasable joint like I did, then its time for a rebuild. Not that bad of a job; with a u-joint press from harbor freight or a loaner from an auto parts store, you can change out the u-joints and centering ball kit in less than an hour (its not necessary to change the u-joints unless they are bad as well; I did just because I was already there). I've been doing my own and its not bad. You can check out Stu Olsen's site for a great writeup with pictures and part numbers. You can also have a drive shaft shop do it for you for possibly around $100, I think thats what Jerry B. usually gets done.
If your squeaking went away, you probably just had something stuck in there from the dirt/mud, etc.. and it worked its way out, but that may mean you are getting close to needing a new centering ball kit. When mine was squeaking, the squeaking would come back each time I drove my Jeep. It would squeak until I had driven above 30MPH or so for a few minutes, and then it would go away until the next time I left my Jeep sit for an hour or more. I finally got around to replacing it 2 months later and all was good. I always make sure to rinse that joint out after I've been in mud; mud is like sandpaper for those joints.