For some reason in order for my truck to engage 4x4 I have to turn it off, switch it into 4 wheel drive and then turn the truck back on. Does anyone know why?
sounds like a weird theory
dodge trucks have a mechanical linkage I believe, there is no vacuum assist (correct me if im wrong)
when you pull that 4x4 lever, that engages t tcase
the fact you say the truck needs to be off doesn't seem right at all.
very first thing I would do is check your linkage for the tcase....get some pb blaster and soak all the linkages. next I would do is some tcase service. new oil, maybe some internal adjustments needs
that thing should slide into 4 wheel drive like butter,
now if you going into 4l, then you need to be in N for it to go in