Some time 4x4 engages some time not 1993 tracker

Old but great post.
this car is not full time 4wd (4x4)
its part time
that means it dont work on dry pavement of any kind
works off road
or
on pavement with ice only.
its no 2006 Grand vitara with real full time 4wd.
sorry, its not, its like and old ww2 jeep. part time.
sold 3 , of these cars. id did , great car but suz sux now.
they bugged out in the USA and Canada.
parts hard to get, super hard besides, sundry items...

read this. first
read the warnings first and the wind up damage and danger
doing so to you, and others on pavement.

http://www.fixkick.com/part-time-test.html

keep one tire on something loose, or all H3LL to pay.
see?
it no center differential