it has auto trans, when i shift in to 4wd it seems to go in with ease but
doesnt work and the linkage seems ok. i dont have locking hubs. could a
hub sensor have gone bad or maybe the hubs need to be cleaned.
Sounds like the actuator in the front differential is toast. I've replaced
mine twice in my 95! The second time, I replaced it with a motor driven
unit(original works on expanding gas). You need a special wiring harness
with it and the extra wire has to be spliced to the brown wire coming into
the top of the transfer case. This has worked good for me for 3 years, and
I find that 4wd engages instantly with this actuator.
Best of luck!
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