2021 Mojave Fox suspension issue

[Westie]

I have a stock Mojave with 1400 miles on it. It has a fairly bad bounce in the cabin on paved roads with imperfections. I feel it at high speeds and low speeds. Hitting speed bumps at low speeds feels like there is extra vibration in the front shocks, like the initial hit of the bump, then another vibration. I’ve been to two separate dealerships for the issue. The one dealership replaced the steering damper, then the steering box (without doing the complete TSB) and now “can’t duplicate the problem”. The bounce is still there, and now my steering has about 6 degrees of play left and right (but that’s another issue). Took it to another dealer, “can’t reproduce the problem.” I went and test drove a stock Mojave from the lot the other weekend, shocks felt completely different. I’m at my wits end. I have a “date” with the shop foreman this coming week. Going to ride in my truck and one from lot.
Any thoughts on what else I can do? I don’t think there are any shops around here with a dynamometer. My other thought is to take it to a jeep/ 4x4 specialty shop and see what they say. At this point, I think the jeep technicians in my area are inept, or just don’t want to find/fix the problem.

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[ScottMc68]

I have a stock Mojave with 1400 miles on it. It has a fairly bad bounce in the cabin on paved roads with imperfections. I feel it at high speeds and low speeds. Hitting speed bumps at low speeds feels like there is extra vibration in the front shocks, like the initial hit of the bump, then another vibration. I’ve been to two separate dealerships for the issue. The one dealership replaced the steering damper, then the steering box (without doing the complete TSB) and now “can’t duplicate the problem”. The bounce is still there, and now my steering has about 6 degrees of play left and right (but that’s another issue). Took it to another dealer, “can’t reproduce the problem.” I went and test drove a stock Mojave from the lot the other weekend, shocks felt completely different. I’m at my wits end. I have a “date” with the shop foreman this coming week. Going to ride in my truck and one from lot.
Any thoughts on what else I can do? I don’t think there are any shops around here with a dynamometer. My other thought is to take it to a jeep/ 4x4 specialty shop and see what they say. At this point, I think the jeep technicians in my area are inept, or just don’t want to find/fix the problem.

I’m back to chasing this. Life took me in diff directions but I need to try to resolve this. What you describe is EXACTLY what I’m having, I think. You hit small bumps straight on and there is a bounce and then an “extra” bounce, like a “shudder”. Took mine in last week and they torqued the ball joints and they are replacing the steering box and the drag link. I’m not having any Hope they will resolve this. And this is nothing to do with a “truck ride” “solid axle “ , it wasn’t like this when new, it totally changed ride at right around 2k miles. Total different ride. I tried lower tire pressure, does nothing to eliminate the bounce. When the parts arrive, I’m going to try to ride with the mechanic that does their lift kit installs and try to pin him down that it’s not normal and not my tires. If you get anywhere, let me know what they come up with. Earlier in this thread someone else thought the shocks could possibly be the issue which is what I have thought for a while. Feels like low speed compression/rebound isn’t working, like the tire is just bouncing because there is no rebound to dampen it and thus the bounce but I’m no suspension pro.
I’ll let you know what I get once I get back in there

 

[nate4bball]

I’m back to chasing this. Life took me in diff directions but I need to try to resolve this. What you describe is EXACTLY what I’m having, I think. You hit small bumps straight on and there is a bounce and then an “extra” bounce, like a “shudder”. Took mine in last week and they torqued the ball joints and they are replacing the steering box and the drag link. I’m not having any Hope they will resolve this. And this is nothing to do with a “truck ride” “solid axle “ , it wasn’t like this when new, it totally changed ride at right around 2k miles. Total different ride. I tried lower tire pressure, does nothing to eliminate the bounce. When the parts arrive, I’m going to try to ride with the mechanic that does their lift kit installs and try to pin him down that it’s not normal and not my tires. If you get anywhere, let me know what they come up with. Earlier in this thread someone else thought the shocks could possibly be the issue which is what I have thought for a while. Feels like low speed compression/rebound isn’t working, like the tire is just bouncing because there is no rebound to dampen it and thus the bounce but I’m no suspension pro.
I’ll let you know what I get once I get back in there

Any update on this? I’m having the exact same problem with my new mojave. Only got 500 miles

 

[Westie]

Any update on this? I’m having the exact same problem with my new mojave. Only got 500 miles

So I dealt with this some months ago…
I went to a local dealer and test drove a similar Mojave and then my Mojave, with one of the senior mechanics/techs from the shop.
The results were exactly the same. Cabin bounce driving on the highway (mostly on concrete highway) for both trucks. The mechanic explained it as the shocks are stiffer than most other cars and even some other jeeps. This must just be the way the Mojave drives, as I think the odds of there being a problem with my truck, and some random truck from the lot, are very low.

 

[21Moja]

Seems like the first step is to start narrowing down possibilities...

F rated tires are going to take some time to figure out your happy pressures, that's a mean tire
I didn't see if you had driven a stock Mojave (off the lot) with a mechanic to see how they differ
Is it possible to have someone video tape you as you drive by at a decent speed, or stick a go pro out the window to see if anything looks off as you are driving?

I have a 21 Mojave with 37s and there has been no difference in the ride quality, if anything its better. This whole "its tuned for all the specifics of a stock Jeep" is simply BS. Jeep may be telling people that but I find it very very very hard to believe they are doing that to each Mojave coming off the line.

 

[ScottMc68]

So…, my updates. Apologies…, new job has had me insanely busy.
The dealer supposedly replaced drag link and “tightened “ everything, alignment as well. The front tires had cupping I noticed and the truck had only 7600 miles and the tires had been rotated at 5k. I was told “ drives like a modded Jeep”. I gave up. It was marginally better after what they supposedly did but I just don’t have time to waste on this anymore and especially given what I paid for the thing. Also Started making that rattle/knock like older cars made from low octane gas. I tried fuel additive and 93 octane gas, did nothing to alleviate that noise. All that coupled with the low mpg and new job with more required travel and it was time to part ways. Traded on a more mile friendly ride.
i have a ton of parts I’ll be selling if anyone is interested. I pulled as much off as I could before the trade. I’ll probably post in for sale section here if I can’t move them locally (SE Pa). Wheels, fox steering stabilizer, bestop, factory soft roll tonneau, tazer mini with front camera (That never got installed), pedal commander, rugged ridge tube doors with mirrors, nice …..,in bed bike rack, all weather floor mats, Bullet Point mount and a few other things.
Good luck to you guys chasing the same/similar issues. Hope you get figured out. Honestly, it wasn’t the F rated tires. Put the stock ones back on for the trade, bounced just as much and they have been sitting for months, I’m sure the pressure was way below factory. For sure not how it felt for the first 2k. But it is in the past.

 

[Bulldog4xfour]

That sucks that some of you guys are having issue with the Mojave shocks. The ride on mine has been great. The only time the shocks felt like crap to me was when I added the teraflex leveling kit. I modified the teraflex shock extension to work with the Mojave and it rides like stock again.

I would measure how much of the shock shafts are showing, and see if maybe the stock ride height is maxing out the shock.

 

[SSinGA]

Just read through all of this and I realize that the OP has sold his truck but here are my $.02 anyway.

Seems like the issue isn't the shocks but a suspension geometry that that does not have enough caster. Would have been interesting to see if some control arm drop brackets to increase the caster would have fixed the problem.

 

[nate4bball]

So…, my updates. Apologies…, new job has had me insanely busy.
The dealer supposedly replaced drag link and “tightened “ everything, alignment as well. The front tires had cupping I noticed and the truck had only 7600 miles and the tires had been rotated at 5k. I was told “ drives like a modded Jeep”. I gave up. It was marginally better after what they supposedly did but I just don’t have time to waste on this anymore and especially given what I paid for the thing. Also Started making that rattle/knock like older cars made from low octane gas. I tried fuel additive and 93 octane gas, did nothing to alleviate that noise. All that coupled with the low mpg and new job with more required travel and it was time to part ways. Traded on a more mile friendly ride.
i have a ton of parts I’ll be selling if anyone is interested. I pulled as much off as I could before the trade. I’ll probably post in for sale section here if I can’t move them locally (SE Pa). Wheels, fox steering stabilizer, bestop, factory soft roll tonneau, tazer mini with front camera (That never got installed), pedal commander, rugged ridge tube doors with mirrors, nice …..,in bed bike rack, all weather floor mats, Bullet Point mount and a few other things.
Good luck to you guys chasing the same/similar issues. Hope you get figured out. Honestly, it wasn’t the F rated tires. Put the stock ones back on for the trade, bounced just as much and they have been sitting for months, I’m sure the pressure was way below factory. For sure not how it felt for the first 2k. But it is in the past.

Thanks for the update! I’m sorry you had to part ways with it, I’m trying to avoid that myself.

I’ve lowered air pressure to 30 psi which definitely helps but I still feel all of the small road imperfections, whether I’m at highway speeds or not. Unless the road is perfectly smooth I get a good amount of vibration that I can feel coming through the floor, steering wheel, door. The whole body. I did install the AEV spacer kit for Mojave and geo correction brackets. I will be test driving a stock Mojave this weekend to compare.

 

[ScottMc68]

I was at 30psi and same. I didn’t want to go any lower. Same handling. You hit a weird like “hump” in the road and the whole vehicle would jump around. Just a strange feeling in the suspension just super bouncy. Maybe it’s just the nature of the beast but I wouldn’t have bought it if it rode that way on my test drive. Anyway.., good luck. Great looking vehicles when done up and way more capable then I would have used. I’ll miss the open air and the bed but not that ride.

 

[Jonathan_max]

So…, my updates. Apologies…, new job has had me insanely busy.
The dealer supposedly replaced drag link and “tightened “ everything, alignment as well. The front tires had cupping I noticed and the truck had only 7600 miles and the tires had been rotated at 5k. I was told “ drives like a modded Jeep”. I gave up. It was marginally better after what they supposedly did but I just don’t have time to waste on this anymore and especially given what I paid for the thing. Also Started making that rattle/knock like older cars made from low octane gas. I tried fuel additive and 93 octane gas, did nothing to alleviate that noise. All that coupled with the low mpg and new job with more required travel and it was time to part ways. Traded on a more mile friendly ride.
i have a ton of parts I’ll be selling if anyone is interested. I pulled as much off as I could before the trade. I’ll probably post in for sale section here if I can’t move them locally (SE Pa). Wheels, fox steering stabilizer, bestop, factory soft roll tonneau, tazer mini with front camera (That never got installed), pedal commander, rugged ridge tube doors with mirrors, nice …..,in bed bike rack, all weather floor mats, Bullet Point mount and a few other things.
Good luck to you guys chasing the same/similar issues. Hope you get figured out. Honestly, it wasn’t the F rated tires. Put the stock ones back on for the trade, bounced just as much and they have been sitting for months, I’m sure the pressure was way below factory. For sure not how it felt for the first 2k. But it is in the past.

How much for the pedal commander? Im new to the jeep world so im just getting started on some basic mods

 

[Jawjadawg]

I have a 21 Mojave with 16k on it and happened to notice oily spray on the side of it in the parking lot and was like what the heck is that? I thought I might of ran through something but unfortunately not. It was all over the rock rails, inside of the wheel wells, fender flares ALL FOUR the whole system blew out. I have not noticed a problem with the ride it was all visual. This journey started with the 4 wheel drive system shitting the bed and going back and forth to the dealership to get it fixed and it got fixed and hasn't acted up since but after this even if it gets fixed under warranty I'm on the fence of whether to keep it or look for something else and trade it in because I cringe to think what it would cost out of pocket to fix. Oh and its all factory stock unmodified... I had flash backs to when I I lost seal on my motorcycles brake fluid reservoir on my handle bars and got sprayed with mineral oil. The spray might not stand out on the photos but you can see the puddles of fluid in the parking lot . I take it in next week luckily the weather is good because I'm relegated to getting to work on my motorcycle. To be continued...

 

[Jawjadawg]

I finally got the Mojave into a dealership and they weren't able to find any leaks...I told them I would wash it real good and monitor but I'm still mystified as to what and where that fluid came from. to be continued...

 

[notoriousms33]

literally got my 21 mojave in jan 2022. After it hit 10k miles I have this IDENTICLE problem.
Guys told me to get airbags (only helps with squat)

I have taken it to 10 dealerships, jeep specialty shops,off road shops. Nothing

I did get under thecar and tightened some bolts and that somewhat helps, not entirely.

I don’t have a direction for us but anyone with insight please chime in

 

[notoriousms33]

anybody mentioning tire pressure isn’t understanding what concern has been described here. I don’t know I can describe it any better than the OP, however it’s something unrelated to said psi

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