4x4 won't engage

SOURCE: 4 wheel drive engages but hubs are not locking in

chances are that your one of your auto locks have when out on you you can replace them with the manual locking type if you dont mind getting out and locking the hubs in. and a plus to manual locks is that they are much much stronger

SOURCE: No 4wd in a 1998 dodge ram 2500 w/360

check behind the right side of the front axle and look for 2 vacuum lines to see if they are still connected. also check on driver side just infront of the transfer case and check the vacuum lines to see if they are still connected. usually the problem is the vacuum lines have become caught on something and disconnected themselves.

SOURCE: 1999 dodge ram 4x4 transfer case

is your fluid the right grade check shift linkage loose or worn or binding manual shift or bad shift fork or moter on automatic shift

SOURCE: Four wheel drive wont engage. Tranfer case is

Sounds like you either have a vaccum leak or your 4 wheel drive actuator is not working to engage the front differential.On my 98 ram there is a black and red plastic lines that are used for the vaccum lines. They are underneath and go from the transfer case to the front axle, check to see if one or both might be cracked or broke completely.If the lines are good then it could be your actuator on the front axle. A new one is about $93 at advance auto parts and not very hard to replace

SOURCE: 1996 dodge ram 2500 4x4 won't engage. no

Your transfer could be bad.