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Old 03-26-2009, 08:44 PM   #1
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Death wobble or bumpsteer?

87 Jeep wrangler 5" coil spring suspension, 35 x 17 tires. When going over 35 and hit bumps or tire wear grooves in road (especially highway) the Jeep wants to drive right off the road! The front end and bushings and tie rods, trac bar, etc are all new and tight. The steering jerks from left to right, always adjusting to keep on road, not a comfortable feeling. Need help !

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Old 03-26-2009, 08:47 PM   #2
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caster

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Old 03-26-2009, 08:51 PM   #3
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Yup, I'd say you have major bumpsteer. When you did the coil suspension on it did you put enough caster in the front axle? I would start with either pushing out the lowers or bringing in the uppers to give you more caster.
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Old 03-26-2009, 09:00 PM   #4
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Funny you said that! I took it for an alignment today and asked specifically to check the caster angle. When I picked it up I asked for the readout the caster was -0.3 & -0.6. I asked to correct it and it is still in the shop. If the control arms do not allow for the adjustment what next? The control arms are adjustable by a cam at the end, by the bracket. Not sure if there is enough movement.
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Old 03-26-2009, 09:02 PM   #5
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i'm gonna let jack hit this one, he knows your suspension better than me, but negative caster???? i'm suprised it even goes down the road, are you sure thats right, that cam is not gonna have that kind of adjustment in it. you gotta do something with those control arms.
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Old 03-26-2009, 09:09 PM   #6
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Could be just a bad reading. I went under it before going to the shop and it looked like it had some + angle to it (not straight up + down).
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Old 03-27-2009, 02:59 AM   #7
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Wow, negative caster? Not trying to be a dick here, but did you have a shop setup the link/coil suspension for you?

If I remember rightly OEM caster angle on a TJ is 5.5 degrees or so of positive caster.

Man I hope the alignment shop can adjust your arms enough to get some decent caster, otherwise you might have to cut off the link and coil brackets and setup the axle all over again.
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Old 03-27-2009, 05:19 PM   #8
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Get off-set ball joints!
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Old 04-02-2009, 03:37 AM   #9
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I was driving today and out of nowhere, the front of my 07 Wrangler started to shake like the tire blew. I pulled off and everything was ok. Is this what everyone is calling the "Death Wobble"??

If so, what is the likely culprit. It about scared the crap out of us.

Any help or advise would be appreciated.

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