Sounds like a u-joint to me. Climb on under and check for any play in the joints, If it's to the point where it's popping and clicking you should be able to tell just by looking at it. Also just because theres no play in the joint doesn't mean it's still good. I had a rear joint that was clicking and popping when I turned and it had no play in the joint. I took it out anyway and the needle bearings inside the cap were basically ground to dust, replaced and all was merry.
A forum community dedicated to Jeep Wrangler owners and enthusiasts. Come join the discussion about reviews, performance, trail riding, gear, suspension, tires, classifieds, troubleshooting, maintenance, for all JL, JT, JK, TJ, YJ, and CJ models!