Hey guys, I know it has been awhile. Then overall run down! Originally I found moderate play in the drive shaft so I pulled it and put a good amount of red grease on it, still had the clunk but no ping sound. Next step lead me to the moderate clunking sound, the drive shaft had about 60 degrees or more of rotation. Going through multiple research avenues, ford dealer questions, mechanic questions lead me to remove the cover to the diff. As multiple tech and mechanics told me the spider gears were very loose. I could move them with my finger a measurable 1/4 inch. Once I pulled the axles the backlash was on the highside to out of tolerance on a four position check. Got the parts u-joints, diff rebuild kit, all parts together for what I did $500. New ring & pinion installed and on the tighter side of tolerance .010 on a four position check. Replaced the limited slip guts, now all tight no chatter within the measurable spacing from factory to get proper pressure on the limited slip. Replaced the u-joints to greasble ones that was the cheap part. With all that apart I re-greased the slip yoke with axle grease. Please not I did this in stages to check work in process to know if I got it or not. Once all this was done I was quiet as a church mouse. Trust me if I could have ended with the slip yoke lube up I would have been happy. I wish I new what lead to all of that wear. It did it really from the day I bought it I just finally got to not wanting to hear it. It's done learned a lot about the whole system and learned no one thing was the dead ringer. My best guess was it was a chain event wear out. Now at 15,000 miles it is still going no sounds.
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