Here's my install post on themAmazing post, lot of info here. I just got my 2023 JLUS and just came here because the steer is very unresponsive (compared with other vehicles i had). Only "mod": installed 275/70/18 ko2 at the dealer, NO lift.
Can you tell me exactly which part # do i have to buy to fix this? The Mopar LCA, two of them? (I´m new in the Jeep world but i´m loving it!!)
Only if you want to see what your caster is set at after the swap, but no alignment will be needed.Do you need an alignment after this swap?
No models come with these from the factory.Is there a way to know if 2023 models have this from factory? or should i buy this directly and have it install?
I don't believe installing longer control arms will help with "unresponsive" steering. If anything, the additional caster will make it less responsive, which is what most people are after.Amazing post, lot of info here. I just got my 2023 JLUS and just came here because the steer is very unresponsive (compared with other vehicles i had). Only "mod": installed 275/70/18 ko2 at the dealer, NO lift.
Can you tell me exactly which part # do i have to buy to fix this? The Mopar LCA, two of them? (I´m new in the Jeep world but i´m loving it!!)
I don't believe installing longer control arms will help with "unresponsive" steering. If anything, the additional caster will make it less responsive, which is what most people are after.
Lower caster causes twitchy steering, and people like to increase their caster to keep it tracking more straight. Not to increase responsiveness.
These control arms shouldn't be needed on a stock sport with no lift. Something else seems like it might need addressing.
No probably not.It´s a 2023 Sahara 4dr with 100 miles on it. I don´t know if unresponsive is the correct word, i mean
it´s very vage and i have to correct all the time.
If i move it a little bit it doesn´t go anywhere, i need to really move the steering wheel to cross.
It´s very soft too. And it doesn´t return back as good as other cars when i do a turn.
That LCA swap will help on this conditions?
Thanks
Thanks a lot.... i did 275/70/18 brand new and that´s the only thing changed from factory, they set at 32 PSI.No probably not.
Sounds more like a steering box issue. You can search this forum for lots of posts about "loose steering and wander". FCA has released several versions of their steering box attempting to rectify this issue, and for the most part, it is much better now. However, sometimes you can get a bad one still.
Could also be improperly torqued ball joints from the factory (a common issue), loose tierod, etc.
Since it's brand new, take it back to the dealer to address. It's under warranty.
Edit: forgot to mention, but check your tire pressure. They tend to come over inflated from the dealer, which can cause wander as well. Try 35 PSI and see if that helps.
It´s a 2023 Sahara 4dr with 100 miles on it. I don´t know if unresponsive is the correct word, i mean
it´s very vage and i have to correct all the time.
If i move it a little bit it doesn´t go anywhere, i need to really move the steering wheel to cross.
It´s very soft too. And it doesn´t return back as good as other cars when i do a turn.
That LCA swap will help on this conditions?
Thanks
Typically caster will be around 4 for stock Rubicons, around 5 for a stock Sahara and a bit higher, maybe 5.5 for stock sports. You may be on the low end for a Sahara so you may have more wander than what is typical. They have bubble gauges on amazon that you can get a fairly accurate caster reading with. If your caster is 5 or less those longer Mopar lift LCAs will help a lot w/ your steering if it's a caster issue.Because of my problem.... should i get a fox ATS Stabilizer ?
Typically caster will be around 4 for stock Rubicons, around 5 for a stock Sahara and a bit higher, maybe 5.5 for stock sports. You may be on the low end for a Sahara so you may have more wander than what is typical. They have bubble gauges on amazon that you can get a fairly accurate caster reading with. If your caster is 5 or less those longer Mopar lift LCAs will help a lot w/ your steering if it's a caster issue.
https://www.amazon.com/Johnson-Level-Tool-700-Magnetic/dp/B00004T807/
I am curious as to where you got these caster numbers as all Wranglers have the same suspension parts. There is no lift in a regular Rubicon. See other thread comparing stock heights. Even the XRecon 1.5 “ lift does not put the Rubicon caster out of spec.Typically caster will be around 4 for stock Rubicons, around 5 for a stock Sahara and a bit higher, maybe 5.5 for stock sports. You may be on the low end for a Sahara so you may have more wander than what is typical. They have bubble gauges on amazon that you can get a fairly accurate caster reading with. If your caster is 5 or less those longer Mopar lift LCAs will help a lot w/ your steering if it's a caster issue.
https://www.amazon.com/Johnson-Level-Tool-700-Magnetic/dp/B00004T807/
Going by the below FCA specs, the whole JL line ( no mention of the newest XR version) the caster range is a low of 3.8 degrees to a high of 6.35 degrees. FCA rather than supplying the correct LCAs they just widen the spec so they can use one LCA part # to cover all models. Each model has different spring heights, and with each inch in height gained about .75 degree caster is reduced (give or take). As far as the XR keeping caster in spec w/ that extra 1.5" lift, If they are indeed using the same suspension parts as a stock Rubicon (except for the taller springs/shocks) then something has to be changed to keep caster in range. IIRC the XR has different axle part #s w/ thicker tubes, it's probably been adjusted (welding the LCA brackets slightly different)to have an extra couple degrees tilt to keep caster in range. Maybe @Roky or @chevymitchell would have specifics regarding this.I am curious as to where you got these caster numbers as all Wranglers have the same suspension parts. There is no lift in a regular Rubicon. See other thread comparing stock heights. Even the XRecon 1.5 “ lift does not put the Rubicon caster out of spec.
Compared to a stock sport or sport s, the rubicon is 'lifted" . A stock rubicon runs 1.5" -2" higher than it's sport conterpart. Maybe .5" of that is in it's larger tires, but the remainder is in the suspension. The shocks and springs are both longer.I am curious as to where you got these caster numbers as all Wranglers have the same suspension parts. There is no lift in a regular Rubicon. See other thread comparing stock heights. Even the XRecon 1.5 “ lift does not put the Rubicon caster out of spec.