Ok, I've got a problem with my 88 yoter's front drivetrain. There is a loud clunking that comes from down there, only when I'm moving. Usually it doesn't happen when in 2 wheel. It is difficult to explain, cause it comes and goes. Um, mostly happens when in 4wheel when driving at a down angle.

Front end is locked, 4in. a-arm drop/lift. T-case is stock, as well as drive shaft.

If anyone can help, i'd appreciate it. Thanks.

 

Check the bushings on the front diff. If they are bad it will let it jump under a load.