Junkers88

Alright folks, I'm going to need some help with this one.

I recently dropped in a front locker for the rig and have been slowly learning what a double locked rig can and cannot do. (89 4runner, 22re, 5 speed, Aussie in the rear, Lockrite in the front, 4.56's and 31's but most of ya'll knew that from my posts over the last year).

Went wheeling the day I put the locker in and things were freaking awesome. I did notice a slight vibration on the way home that only happens when I'm holding the throttle to maintain speed. Example: I'm doing 70 on the highway and holding at 70 it will vibrate enough to "feel" it in the truck. If I accelerate or let off the pedal it goes away.

That wheeling trip was almost 90% mud with a few minor rock crawls, as I said I'm trying to learn the rigs capabilities with the front locked, and I did my best to wash all the mud off of the drive train when I was done.

So far I have no strange steering issues, no wheel hop or tracking issues, fluid levels in the motor/tranny/tcase/diffs are where they should be. Now if I'm on the street and can feel the vibration I can clutch the rig or just pull it out of gear and the vibration is gone.

I'm hoping this is something as simple as a loose nut (not the one in the drivers seat thank you) or something similar.

Help?


edit: Having two lockers makes this thing a blast to wheel.... I mean that.

diablo

Didyou mark the drive shaft before you pulled it off so its on the same as before the install, just thought i would ask. I had to turn mine till I found where it vibrated the least.

BigBluePile

iTrader: (3)

So you think it's some thing in the back vibrating or the front?


It's PROBABLY the nut behind the wheel...I'm just sayin...

shaeff

Check your U-joints.

Junkers88

The locker was installed in the front and I don't run the front on the street so I can't see how that would cause a vibration.

It has got to be in the back. The front isn't running unless I'm on the trail.

Oh and SHUSH!.

I have not yet although I can't see them going out after one wheeling trip unless the front being locked would have caused some strain on the rear.

??

survivorman97

iTrader: (1)

Does your drive shaft have a carrier bearing with a rubber boot? Sometimes those get to much flop in them....

survivorman97

iTrader: (1)

Does your drive shaft have a carrier bearing? Sometimes the boot in those gets too much slop in them...

BigBluePile

iTrader: (3)

Check your drive shaft or your wheel wieghts?

Junkers88

No carrier bearing but thanks for the thought.


Wheel weights? Would a loss of one or two cause this??

BigBluePile

iTrader: (3)

Would hurt to check, might just start wiggling at just the right speed as opposed to all the time.

nytro88t4r

i say u-joint also, my runner was doin the same thing, had a busted rear

g_cali

My vote is u-joint also, because my truck is currently sitting in the driveway with a broken rear u-joint...