I have this issue on the passenger front side. Car has newer strust, new strut mounts, new control arms with poly bushings, new tie rod ends.... and the pop is still there. Its only happening when you turn the wheel say going out of a driveway... but won't happen again unless maybe you move the car forward and back and couple times and turn the wheel the opposite way.. so its odd, and i don't think it's axles. The only things left to replace are the end links which mine are pretty loose feeling, but they don't have a play. I may actually take the passenger strut assembly out all over again, take it all apart and reassemble. The mounts are new but could be its shot, or the hats aren't torqued enough.