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Old 06-09-2009, 04:45 PM   #1
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... It's like death wobble, but -

My 90 YJ is experiencing some death wobble symptoms, Ive read, and read, and read all about DW... but everything Ive seen happens at speeds 50+

I can get this horrid wobble, to the point where it feels like she wants to flip on her lid at speeds of just 20 MPH.

My first assumption was something broke, but everything feels tight at first glance, then / & now Im thinking possibly a caliper locked up in the front.

It doesnt do it all the time though, just totally random.

Im gonna pull apart some stuff tonight and see if I cant figure it out, anyone else have this?


Oh, by the way, Im new.

Nice to meet fellow Wrangler owners, I love off-roading, its such an addicting, and expensive hobby, but you cant help but love the outcome.

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1990 YJ Wrangler
42" tsl
12 bolt h1 beadlocks
Dana 60's
Coil conversion 1 link in rear.
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Old 06-09-2009, 04:56 PM   #2
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welcome to the forum.

wobbles at that speed are also from a bent wheel, or shifted belt/bad tire a lot.

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Old 06-09-2009, 04:59 PM   #3
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hey, welcome. worst wobble ive ever seen at only 20mph was due to a bent driveshaft. another was parking brake cable seized and having too much drag. i guess while your at it check universal joints.
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Old 06-10-2009, 07:58 AM   #4
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The wobble was in 2 wheel drive, and it does it at random, not all the time.

I can drive it for a few days and experience nothing at all speeds, then at random it will go DW on me.

The driveshaft is okay, the u-joints in the driveshaft are okay, the axle joints are shot, they need to be replaced pretty bad and I have the new parts, just havent gotten around to installing them.

If the wheels were bent, or the belts in the tires were messed up wouldnt it do it more consistantly?
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1990 YJ Wrangler
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12 bolt h1 beadlocks
Dana 60's
Coil conversion 1 link in rear.
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Old 06-10-2009, 10:53 AM   #5
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ya, bad wheel or tire will be pretty much consistant.
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Old 06-10-2009, 10:09 PM   #6
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the axle joints are shot
axle joints? you mean front ujoints? if so that may be your problem right there.
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Old 06-11-2009, 08:39 AM   #7
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axle joints? you mean front ujoints? if so that may be your problem right there.
Yea, not the u joints on the front driveshaft, but the joints on the ends of the axles, by the knuckles.

I call them axle joints by habit.

They have alot of play in them, I bought the new joints but havent installed them yet.

You think that could / would cause it?
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1990 YJ Wrangler
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12 bolt h1 beadlocks
Dana 60's
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Old 06-11-2009, 09:11 AM   #8
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never hurts to fix what you know is wrong before over thinking a problem. if you know they're bad fix em up and see if it helps.
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Old 06-11-2009, 06:24 PM   #9
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never hurts to fix what you know is wrong before over thinking a problem. if you know they're bad fix em up and see if it helps.
totally agree.
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Old 06-11-2009, 06:47 PM   #10
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Mine had a loose "tie rod end" on the drag link/pitman arm connection. It was scary as hell to drive like that.

Grab all those ends & give them a good firm shake. Replace any that move laterally. They can pivot about their ball shape, but shouldn't have any side play.
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Old 06-14-2009, 02:07 PM   #11
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mine did the same thing and i had some really bad ball joints replaced them and it is doing fine now
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Old 06-14-2009, 09:32 PM   #12
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Quote:
Originally Posted by Offroad_yj View Post
My 90 YJ is experiencing some death wobble symptoms, Ive read, and read, and read all about DW... but everything Ive seen happens at speeds 50+

I can get this horrid wobble, to the point where it feels like she wants to flip on her lid at speeds of just 20 MPH.

My first assumption was something broke, but everything feels tight at first glance, then / & now Im thinking possibly a caliper locked up in the front.

It doesnt do it all the time though, just totally random.

Im gonna pull apart some stuff tonight and see if I cant figure it out, anyone else have this?


Oh, by the way, Im new.

Nice to meet fellow Wrangler owners, I love off-roading, its such an addicting, and expensive hobby, but you cant help but love the outcome.
bad death wobble happens at lower speeds check all your steering and suspension parts first then if thats doesnt fix it top off your tire air preasure and balance your tires
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Old 06-15-2009, 07:56 AM   #13
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bad death wobble happens at lower speeds check all your steering and suspension parts first then if thats doesnt fix it top off your tire air preasure and balance your tires
Yea, Air pressure is good, and the tires are Ground Hawgs, nearly impossible to balance.
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1990 YJ Wrangler
42" tsl
12 bolt h1 beadlocks
Dana 60's
Coil conversion 1 link in rear.
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Old 06-15-2009, 11:55 AM   #14
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if all the steering/suspention parts are ok that might be the problem see if you can find some one with a different set of tires to try on thare. if you cant you can get the hawgs balanced some shop wont do it and it will take over a lb of weight but you can get them somewhat balanced
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Old 06-15-2009, 04:34 PM   #15
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How is the condition of your steering damper/stabilizer?

If it looks like the factory original, it prolly is!

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