New post. Why does my 95 Tracker (150Kmi) Start making a gear clicking noise @ 30mph in 2WD, and the noise clunks to a stop as it decellerates just before stopping. Moves again silent, 'til 30mph, repeat performance. Attempts @ switching to 4WD, it seems OK 'til 30mph, then it pops outa 4WD into 2WD, and the click, grind, whatever stops and doesn't happen again until the vehicle has been idle for @ least 8hrs. Is it a CV joint? Locking Hub?