Check the oil level on the T-case or just drain it and give it a fresh one. Also did you unlock the hubs?? If you didn't the front driveshaft is turning the FWD part of the t-case wich might explane the noise in 2wd if the chains or bearings are gone bad.

An oil change costs just a few $ and might solve the prob.


1987 SWB Pajero 2.5 TDI on 31" rubber waiting for a hip replacement and bigger shoes