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Discussion Starter #1
Here is the story. My wife brings home a nice '85 4Runner my new toy. I tear it apart and 2 yrs later I have my Rokrunner, but ever since I have had it on the road I have had deathwobble. I have tried everything I know of to get rid of said deathwoble and it won't die. I have crossover steering and everything is tight. I have replaced the bearings in the knuckles there good. Have hiem jointed steering relay rod and drag link no slop there. So anybody, somebody please tell me what causes this and what can I do to get rid of it. TIA
 

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is your frame in good shape?

has it been in a wreck?

it sounds like you have tried everything else. my friend hit a a curb really hard a couple of winters ago and it bent the frame in the front. they "fixed it" <IMG SRC="smilies/rolleyes.gif" border="0"> the body shop, but it has never been right since the curb meeting. <IMG SRC="smilies/nuke.gif" border="0">
 

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Are your tires ballanced????
 

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Originally posted by Rokrunner:
<STRONG>Here is the story. My wife brings home a nice '85 4Runner my new toy. I tear it apart and 2 yrs later I have my Rokrunner, but ever since I have had it on the road I have had deathwobble. I have tried everything I know of to get rid of said deathwoble and it won't die. I have crossover steering and everything is tight. I have replaced the bearings in the knuckles there good. Have hiem jointed steering relay rod and drag link no slop there. So anybody, somebody please tell me what causes this and what can I do to get rid of it. TIA</STRONG>
How's the caster angle? I had bad wobbles running perhaps 1/2 degree under stock (est.) and now went about 1 degree over and its solid as a rock.
 

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I had the death wobble so I put on 2 steering stabilizers and it fixed the problem. I would throw a couple on and even try one on the Draglink. It doesnt hurt to try. Check toe, make sure the front is a 1/4" more than the back.
 

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Do a search or just go back a couple of days, there was about 30 posts on this same subject and it's been gone over before. Oh and newbie <IMG SRC="smilies/thefinger.gif" border="0">
 

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Wicked Raciest !
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Have you checked or adjusted:

The wheels to make sure there not bent. Front and rear
The bushings in the springs and hanger are good. Front and rear
Make sure that the hubs are not bent. Front and rear
U-bolts on axles are torque to proper specs. Front and rear
Steering stabilizer
Knuckle bearings set to proper pre-load 6.6-13.2 pounds on spring gauge.
Wheel bearings adjusted to specs and good.
Tires are balanced and round. Front and rear
Measure wheelbase on both sides to see if is the same. Center of front axle to center of back axle.
Frame bent or cracked
Steering box tight to frame and no cracks around mounting holes.
No extra play in steering box.
<IMG SRC="smilies/usa.gif" border="0"> <IMG SRC="smilies/usa.gif" border="0">
 

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Discussion Starter #9
Wow! thanks for the reply's. You guys have given me a few idea's. I have ran a steering stabilizer w/ no change. I know my wheel bearing are fine. You do have me questioning the wreck that had happened to it right before I got it, hit HARD in the drivers side. I hadn't thught of checking wheelbase on both sides. Wheels are fine, I'm sure there not balanced perfect but swampers w/beadlocks never will be. Thanks again looks like I'll be checking the frame.
 

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Swamper and Beadlocks <IMG SRC="smilies/eek.gif" border="0"> That's your problem right there.
I have two sets of tires. A set of BFG's and a set of swampers with beadlocks.
With the BFG's the truck drives like a car <IMG SRC="smilies/biggrin.gif" border="0"> With the Swamper and beadlocks I have wabble at about 25mph. The less air I run in the swampers the less wobble I get.
Barrow some wheels and tires that are balanced and see if it drives normally.
 

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In my opinion, anyone who blames it on tire balance has never experianced the true "death wobble". I am talking the "Oh God we're gonna die", rip the wheel out of your hands death wobble. It normally only happens in a narrow mph band. (mine was about 30 to 35 mph. Others Ive worked on all seem to be between 25 and 45) from personal experience, I would check the caster. I have seen both too little or too much caster cause it. Loose front end parts can really make it worse.
 

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I have been running 35" radials for several years with no wobbles or any kind. I just bought some Boggers and I have a death wobble at around 30-35mph. I agree with Vova that less tire pressure helps and it goes away as soon as I get out of that speed band. Yes it is a death wobble, feels like the whole runner is going to shake itself apart. Your problem is definetly your swampers. My runner is only for the trail and getting to and from so I don't mind the wobble too much.
 
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