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Old 12-11-2017, 02:16 PM
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Steering wheel shakes when I hit a bump

As the thread title says I have noticed when I hit a bump or pothole on the road my steering wheel shakes for a 1-2 seconds. It's worse when I'm going faster. I basically have to hold my steering wheel with two hands to prevent it from swirling. I know this is not a normal occurrence. What should I be checking for on my next service appt?

I have a 2015 - 2 door JK running stock except the 32" tires and new wheels I got to accommodate the tires.

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Old 12-11-2017, 02:31 PM   #2
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How many miles? My ball joints and steering stabilizer went out at 48,000 in my 2015 and I started getting what you're describing. Bought replacements for both from ET and it disappeared.

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Old 12-11-2017, 02:34 PM   #3
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Sounds like you're developing death wobble. It can be caused by any number of steering components going bad. Or it could be several wearing out.
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Old 12-11-2017, 02:59 PM
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I only have 18,000 miles on my Jeep.

I doubt it's steering component because my Jeep has only 18,000 miles on it. If it's a death wobble wouldn't it happen at other times too not just hitting a pothole? It lasts only a second or two. From searching other forums it seems like it's more of an bump steer maybe?
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Old 12-11-2017, 07:20 PM   #5
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Well the steering components are what connect your tires to your steering wheel so maybe you should still keep those in mind.
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Old 12-11-2017, 08:06 PM   #6
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I experience similar occurrences when the wheel and tires are out of balance.
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Old 12-11-2017, 08:29 PM   #7
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Quote:
Originally Posted by amiii View Post
I only have 18,000 miles on my Jeep.

I doubt it's steering component because my Jeep has only 18,000 miles on it. If it's a death wobble wouldn't it happen at other times too not just hitting a pothole? It lasts only a second or two. From searching other forums it seems like it's more of an bump steer maybe?
It's bump steer, which can then start death wobble. But at 18,000 you should have any worn out equipment especially as you're still running 32" tires. Check for bent track bar or drag link.

https://www.quadratec.com/jeep_knowl...article-68.htm
https://www.extremeterrain.com/wrang...explained.html
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Old 12-11-2017, 09:07 PM   #8
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Quote:
Originally Posted by amiii View Post
I only have 18,000 miles on my Jeep.

I doubt it's steering component because my Jeep has only 18,000 miles on it. If it's a death wobble wouldn't it happen at other times too not just hitting a pothole? It lasts only a second or two. From searching other forums it seems like it's more of an bump steer maybe?
Yeah, when I was a dealership mechanic you don't want to know how many times I found bad ball joints or tie rods on cars with 10000 miles on them. Way more than I can remember... I'd take a real good look at them and check your track bar at both ends make sure it's tight. It's real common for the track bar to hollow out the bracket on the axle end and allow the axle to wobble back and forth causing death wobble.
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Old 12-12-2017, 10:24 AM
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Thanks guys

I think I had this problem since the 1st day I got bigger tires. I was running small factory tires but then swaped to 32"s. I'm running the 32's on the 3.21 axles.

From what I read Bump Steer usually happens when you install a lift? But I have no lift on my Jeep.

I'm not a handy person when it gets to cars so I guess I will take my Jeep to a mechanic and have looked at the things you guys mentioned.

What can be done to fix the Bump Steer? Is it an expensive fix?
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Old 12-12-2017, 11:32 AM   #10
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Thanks guys

I think I had this problem since the 1st day I got bigger tires. I was running small factory tires but then swaped to 32"s. I'm running the 32's on the 3.21 axles.

From what I read Bump Steer usually happens when you install a lift? But I have no lift on my Jeep.

I'm not a handy person when it gets to cars so I guess I will take my Jeep to a mechanic and have looked at the things you guys mentioned.

What can be done to fix the Bump Steer? Is it an expensive fix?
Just going to larger tires shouldn't cause it. Or at least on its own. Bumpsteer is a geometry problem. But stiffer tires could possibly make bumpsteer worse as they transmit more shock/impact to the suspension. What PSI are you running?

@RichL35 is right, go check your track bar and components and make sure they're all tight.
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Old 12-12-2017, 11:39 AM   #11
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32's should be fine... the sport S has stock 32's on 17" rims. check track bar and lower control arms and make sure they are torqued to speck. Track bar is 125 ft/p and the lower control arms are 75 ft/p. I tighten mine every 6 months. you will need a 15 mm socket with a 15 mm wrench.
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Old 12-12-2017, 11:55 AM
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I wish I was handy enough so I could do it all myself. Dealership is quoting me $150 for inspection, local shop is quoting me $100 for inspection. lol
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Old 12-12-2017, 12:27 PM   #13
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From what I read Bump Steer usually happens when you install a lift? But I have no lift on my Jeep.
Bump steer is caused by altering steering geometry. Typically in a JK we would see this when someone flips a drag link without raising the axle side track bar mount to match. If your Jeep is on stock suspension and stock steering, this is likely not your issue.

I would bring the Jeep in under warranty and have them find the issue, then let us know what they find.

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Old 12-12-2017, 02:15 PM   #14
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Unless it is being fixed under warranty, I would never take my Jeep to the stealership.
If they won't fix it under warranty, or if it is no longer under warranty, I would take it to a qualified shop. I typically don't even let the stealership change my oil (even when it would be free to have them do it).
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Old 12-12-2017, 02:38 PM   #15
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unless it is being fixed under warranty, i would never take my jeep to the stealership.
If they won't fix it under warranty, or if it is no longer under warranty, i would take it to a qualified shop. I typically don't even let the stealership change my oil (even when it would be free to have them do it).
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Old 12-12-2017, 05:38 PM   #16
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You mentioned you got new tires, they do occasionally go out of balance. Your steering feels ok, but when you hit a bump it throws the tires out of balance making your tires bounce like crazy and your steering feels like it's out of control. You should go to your local tire shop and have them balance out the front tires, it shouldn't be expensive at all.

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