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Old 12-03-2012, 06:34 AM   #1
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Bump Steer?

This weekend we installed 2" coil springs on the TJ. Drove fine just a little bouncier. Today I took it on the highway to work. Hit a bump and all hell broke loose. I thought I was going to roll. It took me about two minutes to get control of it. The wheel was shaking. The whole thing sounded like it was going to shake loose. It didn't stop until I made my way off the highway and came to a stop.

Made no tire changes or anything else to the Jeep. Just the coil springs. Is this bump steer and if so how do we fix it with a spring lift?

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Old 12-03-2012, 07:12 AM   #2
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If you didn't get an alignment after putting on the new springs, then I bet thats the cause

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Old 12-03-2012, 07:59 AM   #3
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If you didn't get an alignment after putting on the new springs, then I bet thats the cause
Probably.

Classic case of Death Wobble.
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Old 12-03-2012, 08:04 AM   #4
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Do you have adequate shocks for your springs? As stated the alignment has been altered as well.
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Old 12-03-2012, 08:18 AM   #5
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Read the sticky at the top for death wobble.
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Old 12-03-2012, 08:18 AM   #6
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I do not have adequate shocks now. They're pretty stretched and will be replaced ASAP. I'm assuming my toe-in is off now? I'll be taking it for an aligment after work. Hopefully this will fix it.
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Old 12-03-2012, 08:19 AM   #7
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I was just reading that sticky and making a list of things to check. And thinking that maybe this is DW instead. Oh boy......
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Old 12-03-2012, 08:58 AM   #8
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Double check everything to do with your track bars. In my experience they are usually the cause....in my experience.
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Old 12-03-2012, 09:18 AM   #9
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Toe in/alignment X5
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Old 12-03-2012, 09:20 AM   #10
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That's not bump steer. Totally different issues that come from totally different places.
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Old 12-03-2012, 10:11 AM   #11
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So toe-in and DW FTW? And double check my track bar just to be on the safe side... And change my underwear. Check check.
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Old 12-03-2012, 02:43 PM   #12
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So toe-in and DW FTW? And double check my track bar just to be on the safe side... And change my underwear. Check check.
I always keep a clean pair in my "spares" bag.....
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Old 12-03-2012, 08:29 PM   #13
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... And change my underwear. Check check.
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Old 12-04-2012, 09:55 AM   #14
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if those dont fix the issue...could be worn out control arm bushings on axle or tie rod ends... took me a looong time of fix the problem..ended up just replacing almost everything....
also lift one front tire off the ground at a time and check the unit bearings and ball joints
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Old 12-04-2012, 10:06 AM   #15
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So far we've corrected the toe-in (which was way off), rotated the tires, and checked to make sure the track bar wasn't loose. This weekend we'll check the bearings and bushings and probably replace some of those since it's an older Jeep. It's already driving much better, but I think I'll be puckered for awhile anyways.
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Old 12-04-2012, 06:57 PM   #16
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Tie rod ends do obviously hurt steering characteristics but should not cause death wobble.
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Old 12-04-2012, 06:59 PM   #17
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Yup, you just hit death wobble. Loose/Worn Trackbar & out of round tires was the culprit on my jeep. Sounds like you know what you changed on yours.

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