89 tracker viberation

[Seberth]

bad VIBS.


ok 1989s will have lots of things wrong. all of them do, this old and not kept up.

is car 4wd or 2wd? its 5speed guess, if 4wd, ? drive yet with both hub locks removed (or just the cap off if manual locks is it?) no vibs now? easy no? just 1 simple test.
does it fail in 2wd,
does the CV go dead in unluck hub, if not we cant do this test can we, we must repair or lube or replace said hub locks, first.

first learn the art of CV and UJoint tests.
Ujoins, grab the axe (car on full lift up 4 corners jacks stands,
then man-handle it we say
grab both ends at Ujoint and and try to force it in all directions, look at he STAR cross, at there rubber rings, do you see that star move and not the yoke, move, bingo bad bearing there.
bad u-joint, even pry it with a large screwdriver, try to force it in to natural directions, easy no?
CV , car off ground, try to force a CV
turn the tire, see the CV (axles locked at hub if the locks are dead, test is harder)
feel the tire, move it inward (wrong) see if bearings are loose,. there.
then turn the tire, see CV turn, yes, see or feel it jump, bingo bad CV>
A CV 10x more smooth than any Ujoint that is why they are used and for sure at sharp angles.
The axle in your car is not bad. i bet.

cv and ujoints and hubs bad, and wheel bearings front bad, not rear, the rear leaks GL5 fast if rear end fails bearings, that destroy the seal.

fix the front locks first, gee never have i seen a 89 with good original locks, ever, unless i fixed them myself.
then drive it UNLOCKED, and with shifter in 2wd, vibs gone now? yes./no?

the front wheel bearing play is .002 " 2 thou. at the hug rim with a dial indicated attached, more is bad.
If you took off the front hubs (or cap)( and the outer bearing was dry or full of metal what then, oops. its all bad there.

we inspect this first, all that, not the axle ring gear until all else is proven good.

even dropping drive drive shafts rear or front to prove the point (on 4 stands) ,
it can be issues in the transfer case too.
but all that is lasts, did you check all levels in all gear case first, that be super wise that. transmission, transfer case and both axle levels first.
then front hubs. + front wheel bearings.

sorry reply took so long, its a 4x4 , 5 speed manual locks , I reworked them last winter (locks) It only vibrates during acceleration in 2 wheel dr, that's why I'm think drive line, transmission rear end or u joints. U joints didn't seem to have excessive slack. haven't tried, but would assume it would vib in 4 wheel mode also.Gear case levels good.