Cars House

Hey guys any ideas on this one would help... i have a 95 yj 4 banger and its 4WH works fine but low doesnt engage at all. i checked all vac lines, adjusted the linkage about 100 times and nothing.. But the part that scares me is that it doesnt cut the rear into low range at all, so not only does the front axle not ingage but he rear is still in hi gear...any clues? :cheers2::cheers2:
might have better luck over in the yj forum.....