Different kind of bump steer

[Arisdocjk]

I have started noticing a mild bump steer lately. Only happens when going straight and hit a bump where the front goes up and down. I don’t notice it on pot holes or man covers where only one wheel hits things. I don’t notice it over expansion joints, only when the suspension bounces up and down going straight.
I have checked and torqued all steering components. I have recently installed a steersmarts flipped drag link and trackbar bracket and new yeti trackbar with poly bushings.
2021 Mojave with AEV 2 inch spacer lift with Geo brackets and 37 KO2. I did an at home alignment and tried 1/8 toe in and 1/8 toe out. Both felt the same. The Jeep drives great and tracks straight down the road. I would just like to solve this last piece of the puzzle. I have included a video of me bouncing the front end. This is what it does on the road. Any ideas?

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[Gizmo]

Sounds like you have actual Bump steer . When the steering wheel actually turns slightly as the suspension cycles like when hitting a dip in the road. Thats Bumpsteer . Some people refer to a wobble or a shimmy when you do hit a pot hole or a bump with just one tire bump steer but that is in correct . Its hard to tell when someone says they have actual bump steer because 50% or more don't realize what actual bump steer is . Normally its something that has been altered or change with the drag link and or track bar that causes it or some times a tall lift can create it with OE linkage . Most Draglink flips require more than 2" lift . I bet that may be your issue .

 

[Arisdocjk]

I forgot to mention I swapped the 2in AeV spacers in front for Teraflex 3 inch to remove some of the rake. The bump steer was worse before I flipped the drag link and added the raised track bar bracket.

 

[Gizmo]

I have a slight amount of bump steer at 3" with just a currie drag link and core track bar but it takes an extreme dip in the road to make it known. I have the rest of Currie's High steer kit which don't require a drag link flip. They make new Knuckles that just raise the tie rod and drag link like 2.5" so that should take care of the tiny bit I have . Axle end of the track bar gets raised to match and steering stabilize also gest raised . The kit is for wide or narrow axles and for hydraulic ram assist or not

 

[Wheelin98TJ]

How is the relationship between your drag link and track bar? Since you have bump steer, I'm guessing they are no longer parallel.

Can you post a pic of the front showing the drag link and track bar making sure you have both ends in the same picture?

 

[Arisdocjk]

Here are some pictures. It is the steer smarts bracket and drag link so it should be aligned.

 

[Wheelin98TJ]

Sorry, I didn’t explain the pic I was requesting very well.

Can you take a pic straight on from the front and far enough back so you can see both ends of the track bar and drag link?

 

[Arisdocjk]

How about these

 

[Wheelin98TJ]

Dang, it’s just too hard to tell with the sway bar setup you have. It’s blocking the connection points in the pics so you can’t draw a line to see how they relate. What sway bar setup is that?

 

[Arisdocjk]

It’s the fox reservoir canisters on a Mojave.

 

[Gizmo]

You are at the same height as I am. I now have Currie’s RockJock High steer kit installed. My slight bump steer with OE DL and TB and knuckles are now gone . Now with the high steer kit my track bar and drag link are at about the same angle as a stock Rubicon’s are at . This was the best item i have installed since lifting it. Now when wind or road surface makes the jeep rock it has no effect on the tracking of the vehicle at all.

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