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-   -   zj vibes and wandering help...? (http://www.jeepforum.com/forum/f13/zj-vibes-wandering-help-1431245/)

shalezzz 10-24-2012 06:51 PM

zj vibes and wandering help...?
 
hey, i have a 97 zj loradeo 242 I6 I recently bought i had to constantly steer the car back and forth to get it to drive straight it felt like a driving a boat.
- i replaced everything draglink, tie rod inner and outer, adjustable track bar, steering box brace and all 4 ball joints.
- while doing this i installed an iro 3.5 lift f>r.
-stock arms.
- the axle looks close to center and is somewhat parallel but i know i have to adjust it some.

!my problems

1) is that steering effort is required to go straight still and its now twitchy. i think it may be from bump steer now (from axle not being completely centered) but if the road dips or lumps ill get pulled to one side counter steer and than have to counter steer again to go staight. so basically it wanders
2) i have vibes comining off turns accelerating
3) another problem i have not my number 1 priority is it takes forever to stop and i have to press exteremly hard. replaced brake booster and check valve and im still having the same problem (hard pedal) front pads are good. abs light is off but i cant lock up the wheels and have not felt abs kick in

alignment specs.
front camber R= neg .9 L=.6
caster= 6.09
toe R= .05 L= .05

possible solution
1) adjust track bar?
2) get adjustable front control arms? and adjust my caster and pinion angle?
thanks for any help or suggestions

95grandorvis 10-24-2012 08:21 PM

I had a similar problem. Mine would shake bad when hitting a bump. I bought a drop pitman arm to make my steering angle better. Anyways it stopped after that. Maybe look at it and see if its got to much of an angle.

WhiteOut 10-24-2012 08:27 PM

Make sure the axle is centered and get the control arms to get everything dialed in.

You'll never need a DPA on a properly setup vehicle.

95grandorvis 10-25-2012 09:50 AM

If you lift your jeep it makes the axles farther away from the body. How would you not need one if it makes your steering stretch out?

WhiteOut 10-25-2012 12:45 PM

Quote:

Originally Posted by 95grandorvis (Post 14356218)
If you lift your jeep it makes the axles farther away from the body. How would you not need one if it makes your steering stretch out?

ZJ pitman arms are sold as drop pitmans for other models, they are already long enough from the factory.

wiscozj 10-25-2012 01:02 PM

im having the same "darting" and swaying problem. could it possible be anything in the rear like sway bar bushings or anything like that?

newfieZJ 10-25-2012 04:55 PM

New control arm bushings in those stock arms would make a world of difference :) .

shalezzz 11-03-2012 07:26 PM

the wandering isnt as bad as it was got that taken care of.
i still have some vibes when accelerating and crusing above 55. i think im gonna get adjustable uppers and fixed lowers for the front. ill post pics and see what you think im trying to figure out if i should do the rears also

durango-bob 11-03-2012 07:50 PM

Pull the front driveshaft and see if the vibes go away. That will tell you which end is causing the problem. You also never mentioned your front hub bearings. They may also need to be replaced. As for the DPA, you goal is to get the effective angle of the drag link parallel to the effective angle of the track bar. The effective angle is a line from the center of the pivot point at each end of the link. Unless you did something different with your lift, the two links would have stayed parallel which is why you don't need a DPA.

JasonStebbins 11-03-2012 07:52 PM

Quote:

Originally Posted by newfieZJ (Post 14358286)
New control arm bushings in those stock arms would make a world of difference :) .

Quoted for truth. I replaced front upper and lower arms altogether with OEM for $85.00 off eBay and it completely fixed the jerking steering wheel when hitting bumps. The bushings are too much of a pain so I just bought new arms.

Try removing the front drive shaft and see if the vibration smooths out? Could be out of balance or have bad joints.

Easier solution : When is the last time your wheels were balanced? I had a highway vibration that was caused by one of my wheel weights falling off at some point.

A steering stabilizer helps bump steer, but usually that's only the case if the current one is completely shot.

How are the conditions of all four of your ball joints?

shalezzz 11-03-2012 11:56 PM

All 4 ball joints are new, steering stabilizer is new.
The tires came on the jeep( weights are on there, it was balanced at some point) tire pressure is good.
There's no lateral or vertical play in either drive shaft. I'll put pics below.
So I want the rear dif pointed up more and the front dif pointed down more correct?
http://i749.photobucket.com/albums/x...07E6C9E6BA.jpg
http://i749.photobucket.com/albums/x...16CBCB921E.jpg
http://i749.photobucket.com/albums/x...16D8BD4482.jpg
http://i749.photobucket.com/albums/x...16D17A8E06.jpg
Can you pull the front drive shaft on the 242nv I hear different things

JasonStebbins 11-04-2012 12:15 AM

Quote:

Originally Posted by shalezzz (Post 14401450)
Can you pull the front drive shaft on the 242nv I hear different things

Yep. Rear wheel drive.

That's the easiest thing and will rule out an unbalanced/damaged shaft.

shalezzz 11-05-2012 09:16 AM

Bump
So I want the rear dif pointed up more and the front dif pointed down more correct?

shalezzz 01-15-2014 01:10 AM

UPDATE: the wander is gone once i replaced the steering box. vibes are from when my engine is chugging searching for a gear at like 50 before it downshifts

PolkaPower 01-15-2014 08:01 AM

Quote:

Originally Posted by shalezzz (Post 14407146)
Bump
So I want the rear dif pointed up more and the front dif pointed down more correct?

The rear diff pinion should be parallel to the t case output. The front diff pinion should be pointed at the tcase output.


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