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  Topic Review (Newest First)
07-04-2021 03:47 PM
shackleford I've decided to try to remedy the cabin boom by replacing the rear shocks and mounts. What brand/model do you guys like?

If I do OEM, it looks like the parts

Shock Upper Mount - Mopar (68311287AA)

Suspension Shock Absorber Kit - Mopar (68298930AA)
07-02-2021 11:19 PM
ColdCase The Summit does not have load leveling shocks because the the air suspension levels itself automatically.

The purpose of load leveling shocks is to keep the attitude of the WK2 constant regardless of pay load.

Load leveling shocks on coil sprung WK2s are NIVOMAT type shocks. They have a factory set length and the pumping action of the shock moves fluid around to maintain that length.
07-02-2021 10:04 PM
shackleford I've seen people mention "load leveling shocks." What are those? Different from regular shocks, I assume. Does the Summit have them?
07-02-2021 07:22 PM
shackleford I wonder if the Jeep has something similar to what's described in post #13.

https://www.clubarmada.com/threads/c...57/#post-99448

Quote:
But you may get the boom! Underneath in the back, in the rocker panels/fenders behind the tires you will find little grates. inside the grates are baffles made out of what feels like inner tube material. These vents are to release air pressure that causes the boom (cabin outflow vents). Like having the door open on a turbo prop on the ground with the engines running. If they get gooped up and can't flow enough air, then you get the pressure on the ears. If they flow freely and the back is not full of stuff, then you don't have to open the rear speed brake windows to relieve the pressure...
07-02-2021 06:42 PM
shackleford So I took it to the dealer to look at the rear suspension and something else. The technician said that he's heard this complaint before, usually from people who haven't had this vehicle/the airbags, and that it's normal and due to how the airbags operate.
06-14-2021 08:57 AM
WK2Overland4X4
Quote:
Originally Posted by shackleford View Post
That possibility occurred to me as well. I wish there was a way to turn it off, but I think I'd have to just disconnect something.
Fuse pull would be the easiest. Not sure which one, look for the one for the amp. But that will kill everything sound related.
06-13-2021 06:09 PM
shackleford
Quote:
Originally Posted by BubbaATL View Post
Just a thought ... I occasionally get a very noticeable LF drone at very low speed over uneven pavement. I've had a vague notion that it might be related to some sort of feedback glitch in the active noise cancellation function. Come to think of it, I hadn't noticed it for a long time, and then it happened again last week, and this thread reminded me of it.

That possibility occurred to me as well. I wish there was a way to turn it off, but I think I'd have to just disconnect something.
06-13-2021 06:05 PM
shackleford
Quote:
Originally Posted by 19GCTrailhawk View Post
Summarizing what ColdCase mentioned which can get a little confusing, the front has struts with a self contained airbag. The rear has shock absorbers and a separate airbag.

Got it. Thanks for the clarification.
06-13-2021 05:22 PM
19GCTrailhawk Summarizing what ColdCase mentioned which can get a little confusing, the front has struts with a self contained airbag. The rear has shock absorbers and a separate airbag.
06-13-2021 12:13 PM
BubbaATL Just a thought ... I occasionally get a very noticeable LF drone at very low speed over uneven pavement. I've had a vague notion that it might be related to some sort of feedback glitch in the active noise cancellation function. Come to think of it, I hadn't noticed it for a long time, and then it happened again last week, and this thread reminded me of it.
06-13-2021 11:39 AM
shackleford
Quote:
Originally Posted by ColdCase View Post
The fronts are struts with air bags instead of steel springs.

So, there are two front and two rear struts with air bags instead of steel springs? Are there also "standard" shocks?
06-13-2021 11:37 AM
shackleford
Quote:
Originally Posted by danelo View Post
How about tires? They all make noise dependent on where the tread level is at. The AC being on probably just changes the perception of the noise since it also makes a good amount of noise depending on what fan speed it is on.

Good point. I'll check the tread today. Yeah, the situation with the AC is fairly minor. I make take it to a dealership to have them check the few items that people have suggested above.
06-13-2021 06:01 AM
danelo How about tires? They all make noise dependent on where the tread level is at. The AC being on probably just changes the perception of the noise since it also makes a good amount of noise depending on what fan speed it is on.
06-12-2021 09:41 PM
ColdCase The fronts are struts with air bags instead of steel springs.
06-12-2021 09:18 PM
shackleford
Quote:
Originally Posted by ColdCase View Post
The rear suspension doesn't have struts, its a typical coil spring with a separate shock. But in your case it will have an air bag instead of metal spring. Replacing the shock mounts may help.

You may have bad motor mounts, or a bad belt tension pulley, however. Did what you read apply to the air suspension.

Ah, yes. The Summit has four airbags, correct? I didn't think about the motor mounts. In what I read, people just mentioned the rear shocks. I may just have a dealership check these parts out.
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