so I have a 92 automatic 4runner that I had a 3.4 swap done to....now the 4wd doesn't work! the shift linkage moves in and out of the transfer case like it should, and the 4wd light comes on and the hubs lock, but the 4wd doesn't engage. my question is, is there something that you do to the transfer case when you do the swap that they may have forgotten to do? could it be the speed sensor? any help would be appreciated don't feel like spending 750 on a new transfer case if that's not the problem