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Topic Review (Newest First)
07-26-2013 03:20 PM
krawdaddy mine only does it when I first put it in gear. I can be in the garage and on level grounding, not moving... groooooooaaaaan

It's a Jeep thing I guess. I've learned not to sweat things like that, water on the floor boards, poor gas mileage etc. I just love it unconditionally
07-26-2013 03:17 PM
m998dna I hear it if I focus on it .. but it doesn't bother me because background noise becomes non-audible over time - its the way my brain is wired. I grew up near railroad tracks and after awhile you become acclimated to the noise.

I have tinnitus due to exposure to loud noises when I was younger... I ran open expansion chambers in the desert, watched top fuel dragsters, spent many years in clubs with loud music and operated large printing presses up through my mid twenties.

I don't even hear my ears ring unless I focus on it.

.
07-26-2013 03:06 PM
panthermark I used to think it sounded like a ship sinking with metal tearing...but yeah...Chewbaca is a much better description!
07-26-2013 03:02 PM
Jstraw Chewbaca, yup, thats the sound. Lol! And for clarification, new jeep brakes are electronically controlled now... Ever have to jam them? It doesn't make that sound. Mine only do it when I'm crawling. Engineering a braking system to make that sound, on one of the most capable off-road vehicles in the world, is not that far fetched!
07-26-2013 02:55 PM
ClemsonWill My JK has done this from day one and it really annoyed me at first. Now I don't notice it near as much. After just a couple of minutes on the road its gone.

Has anyone tried changing to aftermarket pads and rotors to see if that makes a difference?
07-26-2013 02:54 PM
Jstraw Maybe we're referring to different sounds. My brakes squeak when I'm going sloooow, a low sounding squeak. Just because you think it's bull, doesn't mean your right. Jeep has been using the same axles, brakes, and rotors for a while now, can't see how they can't see how it's an issue. To me it's works like it is intended, an audible for wheel spin during slow crawling.
07-26-2013 02:47 PM
Homercidal Maniac Most newer brake systems have "groan" issues. Long story short, you used to ahve smaller, hotter brakes with semi-metalic linings - i.e. steel wool that did a nice job of keeping your rotors clean. They did not stop as well, lasted maybe 30k miles, squealed when hot, but they did not "groan".

Now you have "NAO" - Non-Asbestos Organic linings that last much longer, your brakes are bigger and cooler and better but the new linings leave lining material on your rotors.

I put Performance Friction linings on all my vehicles when I change the linings. They squeal when hot but they keep the rotors clean and stop great.
07-26-2013 02:46 PM
Silver Billet
Quote:
Originally Posted by socal_rubi View Post
Mine sounds like Chewbacca
Funny! Same here
07-26-2013 02:32 PM
JKU.12
Quote:
Originally Posted by Jstraw View Post
I was told by a long time jeeper and jeep dealer that they added the sound feature for trail crawling... It gives an audible sound to indicate tire movement over rocks or on hills when crawling is needed. I was led to believe this was an intentional addition. I love it on my Rubicon when navigating rocks.
I like that answer


Good one to tell non-jeepers
Lol
07-26-2013 02:05 PM
HOOCBB
Quote:
Originally Posted by Jstraw View Post
I was told by a long time jeeper and jeep dealer that they added the sound feature for trail crawling... It gives an audible sound to indicate tire movement over rocks or on hills when crawling is needed. I was led to believe this was an intentional addition. I love it on my Rubicon when navigating rocks.
If you buy that, I've got a resort to sell you in Nuevo Laredo, MX.
07-26-2013 01:52 PM
Jstraw I was told by a long time jeeper and jeep dealer that they added the sound feature for trail crawling... It gives an audible sound to indicate tire movement over rocks or on hills when crawling is needed. I was led to believe this was an intentional addition. I love it on my Rubicon when navigating rocks.
07-26-2013 01:05 PM
InvertChaos
Quote:
Originally Posted by pseuno View Post

manuals will do it too if you are stopped on any incline and you have to press the brakes to keep the vehicle from rolling.

I thought all vehicles groaned if you let the brakes "slip"

Different brake pad material will have different effects I suppose.

First time with a Jeep and I wonder if the braking would benefit from a brake line upgrade to stainless steel braided. Less modulation of the brake force and more discrete pressures that would translate into better braking feel and less "slipping" of the brakes??
I know a lot of people upgrade to stainless steel brake lines. Maybe there is something to it.
07-26-2013 12:31 PM
pseuno
Quote:
Originally Posted by InvertChaos View Post
Are these all automatic transmissions? I've heard other cars groan, but they've all been autos at idle since they want to go forward. I haven't heard a manual transmission vehicle do it.
manuals will do it too if you are stopped on any incline and you have to press the brakes to keep the vehicle from rolling.

I thought all vehicles groaned if you let the brakes "slip"

Different brake pad material will have different effects I suppose.

First time with a Jeep and I wonder if the braking would benefit from a brake line upgrade to stainless steel braided. Less modulation of the brake force and more discrete pressures that would translate into better braking feel and less "slipping" of the brakes??
07-26-2013 09:18 AM
michiganadam mine doesnt groan and never has
07-26-2013 09:13 AM
Morgan mine does it only when its raining, almost sounds like the metal tab hitting the rotor when the pads are worn down, but a lot deeper sounding.
07-26-2013 09:12 AM
HOOCBB Mine doesn't do it that I know of. I'll pay closer attention next time to verify.
07-26-2013 09:07 AM
InvertChaos Are these all automatic transmissions? I've heard other cars groan, but they've all been autos at idle since they want to go forward. I haven't heard a manual transmission vehicle do it.
07-26-2013 08:51 AM
BB1857 Yup same here...i actually like it when trail running because it gives me a better idea of how much to come off the brake when on a steep descent!! plus it always give my passengers this--->>
07-26-2013 07:23 AM
Miser Backing out of driveway from day one. It is annoying, but normal!
As of current, 3300 miles, and same sound as when new, no worse, or no better.
07-26-2013 07:09 AM
chcg12 Mine too since day one-9k miles now.
07-26-2013 03:22 AM
Justgot2hunt Mine as well out of garage/driveway. As son as I saw this thread I felt better (only 500 miles on mine so far).
07-25-2013 09:36 PM
Jeepsk8
Quote:
Originally Posted by legitposter View Post
My JKU brakes groan loudly right when a complete stop is being reached and right when letting off the brakes from a complete stop.

4500 miles on the clock.

Oh well, I guess its normal.
Mine do the same thing. About 8500 miles on mine.
07-25-2013 08:42 PM
legitposter My JKU brakes groan loudly right when a complete stop is being reached and right when letting off the brakes from a complete stop.

4500 miles on the clock.

Oh well, I guess its normal.
07-25-2013 07:40 PM
jeep2007
Quote:
Originally Posted by Old Dogger View Post
My 2013 from day one has also done it, but only when backing out of driveway!
So the solution would be to pull it out of the driveway
07-25-2013 07:38 PM
Metonymy
Quote:
Originally Posted by kik View Post
That's usually the sound when the Hill Start Assist is engaging/disengaging.
Nope. I have that turned off and mine still does it.
07-25-2013 06:41 PM
JKU.12
Quote:
Originally Posted by ESP View Post
Wait until your wheeling down a steep hill using the brakes. Talk about groaning.
No kidding!!!!


Can use the noise as a gauge on how slowly to let off the brakes
Lol
07-25-2013 06:04 PM
LoveJiuJitsu
Quote:
Originally Posted by panthermark View Post
I don't know why it does that when I back out of the driveway.... It was odd at first, but now I don't think about it.
Pretty much this.
07-25-2013 06:03 PM
socal_rubi Mine sounds like Chewbacca
07-25-2013 05:19 PM
kik That's usually the sound when the Hill Start Assist is engaging/disengaging.
07-25-2013 04:46 PM
Old Dogger My 2013 from day one has also done it, but only when backing out of driveway!
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