2003 Ford Explorer - Rhythmic thumping noise under.
I have replaced all 4-wheel bearings, rear differential, rear axle, drive shaft
& all 4-tires. None of these has resolved the issue. Its a rhythmic thumping
noise that doesn't start until after I have him about 45mph (depending on
the day). On colder days, it seems to take longer before the thumping
starts. And will then continue whether I am accelerating/decelerating. Also,
when coming to a quicker stop the thumping becomes excessive and
sounds like a loud banging sound in the rear. Not sure if maybe the issue is
the transfer case or front differential?