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Old 12-17-2013, 09:23 PM   #1
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What’s The Hell Is This?

The Situation:

I’ve got a “ticking/clicking” sound as best as I can describe it, that seems to be coming from the underside and about midway or maybe more towards the rear of my Jeep. It seems to be relative to my speed, as in the faster I go, the faster it ticks/clicks. I didn’t even notice it until I took the top and doors off for the first time but I can hear it as soon as I pull out of my driveway. I mean as soon as I let off the brake in Drive and start rolling, it slowly starts a light clicking/ticking sound and as I accelerate, so does the noise from a dead stop up until about 35-40 mph. That’s when it either goes away or is just drowned out by the hum of my tires on the road from that point on until I come to a red light or stop sign, then it starts up again as I accelerate.


Details on the Jeep:

I’ve got a 2010 JK 2 door sport with 45,5xx miles on it and that has a 2.5” RockKrawler lift on it with 285/75/16 Pro Comp Xtreme A/T’s. My first thought was that it might be my driveshaft but after reading on here a little bit, it seems that I should be good up until about a 4” lift before looking at replacing my driveshaft. But I don’t really have any other ideas as to what it could be which is why I’m turning to the wealth of knowledge here. I brought it to two different off-road shops here in my area who deal with Jeeps a lot and one said that he thought it was my driveshaft and he took a grease gun with an end on it that looks like a needle you’d use to put air in a football, or a basketball and pumped grease into the area behind the black cover on the rear driveshaft hoping it might make it quieter but it effectively didn’t do a damn thing to quiet the noise much less solve the issue. The other shop I took it to thought it could be a chipped gear in the rear diff but after pulling the cover and inspecting it, we found nothing.


This is about all the pertinent info I can think of right now and I know how much a pain in the ass/damn near impossible it is to diagnose noises over the internet without riding in the vehicle but hopefully I have described everything well enough that you guys (and girls maybe) can give me some better ideas to check out. Thanks.

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Old 12-17-2013, 10:25 PM   #2
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I don't think the stock drive shafts are serviceable. Have you considered the u joints? I would put it up on jack stands start it and put it in gear. If the noise starts as soon as your rolling you should be able to find it that way. Obviously be extremely careful since everything is in motion

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Old 12-18-2013, 12:45 AM   #3
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Quote:
Originally Posted by BIGTom View Post
I don't think the stock drive shafts are serviceable. Have you considered the u joints? I would put it up on jack stands start it and put it in gear. If the noise starts as soon as your rolling you should be able to find it that way. Obviously be extremely careful since everything is in motion
there's only one ujoint in the driveshaft. They use rzeppa joints. They will make tapping and clicking noises when the boot rips and they get dirt inside and grease spun out.

I replaced mine with tatton driveshafts. No problem now.
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Old 12-18-2013, 01:14 AM   #4
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Quote:
Originally Posted by BIGTom View Post
I don't think the stock drive shafts are serviceable. Have you considered the u joints? I would put it up on jack stands start it and put it in gear. If the noise starts as soon as your rolling you should be able to find it that way. Obviously be extremely careful since everything is in motion
Uuuummm, how bout not! Bring it to a shop with a lift and inspect it like you care about you life please please please. My old boss had a very serious accident doing something similar to this.
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Old 12-18-2013, 01:32 AM   #5
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Could be something broken inside the rear brake drum....
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Old 12-18-2013, 06:03 AM   #6
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Quote:
Originally Posted by BIGTom View Post
I don't think the stock drive shafts are serviceable. Have you considered the u joints? I would put it up on jack stands start it and put it in gear. If the noise starts as soon as your rolling you should be able to find it that way. Obviously be extremely careful since everything is in motion
...nope, nada, no...not only no, but HELL NO!

Quote:
Originally Posted by COStrider View Post
Uuuummm, how bout not! Bring it to a shop with a lift and inspect it like you care about you life please please please. My old boss had a very serious accident doing something similar to this.
yup...this post!
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Old 12-18-2013, 07:44 AM   #7
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How about a rock stuck in your tread ? CV would be my next guess. You do have a single u-joint on the front shaft and 2 on the front axles. Check them all

Fwiw. There is now stock CV service kits. Pricey though, better off with a new aftermarket DS.

Running the jeep in gear up on stands is often done to look for bent axles or rear flange.
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Old 12-18-2013, 07:47 AM   #8
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If it's not the rock-stuck-in-the-tread thing, then it sounds like a U-joint starting to fail due to wear. The needle bearings inside start breaking and the first thing you hear is a clicking noise.
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Old 12-18-2013, 08:00 AM   #9
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Sorry couldn't resist, the title reminded me of this...

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Old 12-18-2013, 10:38 AM   #10
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Have you checked the fluid in the transfer case?

Bob K.
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Old 12-18-2013, 09:41 PM   #11
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Quote:
Originally Posted by SuperDave07 View Post
I didn’t even notice it until I took the top and doors off for the first time but I can hear it as soon as I pull out of my driveway. .
Please tell me its not the seatbelts...
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Old 12-18-2013, 09:49 PM   #12
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OP, before checking the ujoints and all that, first i'd check to make sure your calipers aren't clipping your wheel weights; that can sometimes cause that sound you're experiencing.
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Old 12-19-2013, 11:56 AM   #13
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Quote:
Originally Posted by Slater451 View Post
Could be something broken inside the rear brake drum....
I'm not the most mechanically inclined person so i'm not sure what to do/look for to investigate on this but I do want to check on all of these suggestions.

Quote:
Originally Posted by RoadGlide View Post
...nope, nada, no...not only no, but HELL NO!



yup...this post!
I'll definitely have to take it to a shop and have them check out the U-joints, idk why I didn't have them check em already.

Quote:
Originally Posted by BManz View Post
If it's not the rock-stuck-in-the-tread thing, then it sounds like a U-joint starting to fail due to wear. The needle bearings inside start breaking and the first thing you hear is a clicking noise.
It's definitely not a rock stuck in my tread because I lifted the Jeep up, front and rear and turned all four wheels and pulled every damn rock out and still have the noise. But funny that you mention that because that is EXACTLY what the noise sounds like.

Quote:
Originally Posted by nwbronco View Post
Have you checked the fluid in the transfer case?

Bob K.
I have not but I will check it now that you mentioned it.

Quote:
Originally Posted by CrispyB View Post
Please tell me its not the seatbelts...
No lol definitely not the seatbelts. The top and doors have long been put back on and the noise is still there. Any ideas on keeping those damn seatbelts from beating the Jeep to death is also appreciated though.

Quote:
Originally Posted by JKralph View Post
OP, before checking the ujoints and all that, first i'd check to make sure your calipers aren't clipping your wheel weights; that can sometimes cause that sound you're experiencing.
This sounds interesting, I didn't know that that would even be a possibility but it makes sense. I'll give that a look as well and see if that could be it.

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