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Old 10-15-2008, 10:47 AM   #1
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Clutch Noise... Maybe?

Hey Guys!

I have been hearing a weird noise coming from my Wrangler as of late and now it seems to be getting worse.

It started shortly after I bought it and it basically is a chatter that I hear when the clutch is disengaged.. It almost sounds like something is rattling around, but when I engage the clutch, it goes away completely..

Any ideas of what this could be? Throw-out bearing? It doesn't shift poorly, nor is there any play in the clutch whatsoever.. Oh, no slippage either. It seems to be the loudest after I have done some city driving....

My friend just says it is a "Noisy" clutch, but man it is sure driving me nuts.

Thanks for the help everyone..

T

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Old 12-23-2008, 06:04 PM   #2
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Old thread but I got that same problem. Ever figure it out? Mine does have issue's sometimes going into gears. Sometimes will grind even if the clutch is in all the way...

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Old 12-23-2008, 06:57 PM   #3
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did you ever get a high pitch whine.....could be the throw out bearing
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Old 12-23-2008, 09:00 PM   #4
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I have the same sound from my Jeep transmission. It is not the throw out bearing because when I push the cluch pedel down the sound stops. When I let the clutch out the grinding sound starts. I had a mechanic check it and he said I need a new transmission. I said bull it is the bearing on the main trans shaft. I asked him what will happen if I keep driving the Jeep. He said the bearing may lock up. I said when it does I will know what the problem was. I am driving the Jeep until it locks up or something else happens.
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Old 12-23-2008, 09:29 PM   #5
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I have the same sound from my Jeep transmission. It is not the throw out bearing because when I push the cluch pedel down the sound stops. When I let the clutch out the grinding sound starts. I had a mechanic check it and he said I need a new transmission. I said bull it is the bearing on the main trans shaft. I asked him what will happen if I keep driving the Jeep. He said the bearing may lock up. I said when it does I will know what the problem was. I am driving the Jeep until it locks up or something else happens.
thats what im talkin about.. good man!

i hate how when you go to a shop these days they dont want to tell you anything.

oh, got a problem with the tranny? you need a new one. or you need it rebuilt.

we dont know what it might be, so we will need to replace the whole thing.

b.s.

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Old 12-23-2008, 09:32 PM   #6
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That is my type of guys above me! Drive it till it blows then fix it! I am doing that with my tranny and clutch! First gear doesn't like me but ehh I can still muscle it in! To the grinding sound, it maybe the throw out bearing My mustang throw out bearing went out and it didn't do it when the clutch was pushed in.
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Old 12-23-2008, 09:50 PM   #7
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Don't know what year Jeeps you guys have, but the 6 speeds in the newer TJs are famous for trany noises. Mine rattles in neutral or clutch in, squeaks/creaks when pressed, and something almost sounds "loose" when reved a little in neutral. I have taken it to the dealer three times, all three times I was told normal noise. They said I can replace the clutch and throw out bearing if I wanted (not under warranty) and it would go away for a few thousand miles, than come right back. Mine has had this noise since I bought it at 22k (new trans was put in at 19,000mi for the 6spd reverse problem) and I have 45,000 on it now. Nothing has broke yet...

A quick search on rubicon forums about clutch noise reveals A LOT of the same thing I have said. Really noisy clutch/transmission that the dealer calls normal with lots of miles and no failures.
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Old 12-26-2008, 10:09 AM   #8
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I just bought a 05 TJ 6speed with the 4.0, and only 48k miles. I have noticed now that I have put some miles on it, that I am hearing a noise from the transmission area. The noise happens when the car is warmed up, I have to turn off the radio and heat to hear it. Then just sitting with the engine running and the transmission in neutral with the clutch let out, I hear a sound like a loose rock(s) bouncing around inside the transmission or close to that area. If I push in the clutch or rev the engine, it goes away. It has been way too cold here in Chicago to do any sort of real investigation. I have a 3 month powertrain warranty from the dealer that I bought it from, so if its a real issue, I want to have it fixed. But if its normal, I dont want them touching the Jeep. It is a Ford warranty and have to take it to a Ford dealer for service. I would rather not have them "learn" how to fix this on my car if at all possible.

Does this sound like the same thing you are seeing?
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Old 12-26-2008, 12:16 PM   #9
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I don't hear any loose rocks noise.. Other than the noise in nuetral with the clutch out that only other odd noise i have is when in first or second it makes a different noise.. Oh well I guess they are just noisy. I'm going to drop the cover in the back and make sure nothing is loose/broken and it not ill just have to get used to it. Didn't get it to be nice and quiet!
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Old 12-26-2008, 12:24 PM   #10
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That has been standard on just about every TJ I've been in. Everyone calls it the box of marbles. I know of jeeps with 140k+ with the same noise and no problems.
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Old 12-26-2008, 12:34 PM   #11
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Thank you. That is a great load off my mind. Now if I could just fix the low idle (probably just a clean of the IAC), I can focus on mods.
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Old 12-26-2008, 07:27 PM   #12
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Originally Posted by charheep View Post
I just bought a 05 TJ 6speed with the 4.0, and only 48k miles. I have noticed now that I have put some miles on it, that I am hearing a noise from the transmission area. The noise happens when the car is warmed up, I have to turn off the radio and heat to hear it. Then just sitting with the engine running and the transmission in neutral with the clutch let out, I hear a sound like a loose rock(s) bouncing around inside the transmission or close to that area. If I push in the clutch or rev the engine, it goes away. It has been way too cold here in Chicago to do any sort of real investigation. I have a 3 month powertrain warranty from the dealer that I bought it from, so if its a real issue, I want to have it fixed. But if its normal, I dont want them touching the Jeep. It is a Ford warranty and have to take it to a Ford dealer for service. I would rather not have them "learn" how to fix this on my car if at all possible.

Does this sound like the same thing you are seeing?
Read my post above. One of the common 6 spd noises is the "box of rocks" type noise. It is what it is. Jeep dealer says normal. Dodge never could make a manual tranny, and Jeep has always been even worse. With that said, the noise is normal and not a mechanical problem..
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Old 12-26-2008, 07:38 PM   #13
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The noise you're hearing is just the normal sound of the manual transmission gears and shafts spinning whenever your foot is not holding the clutch pedal down.

Throwout bearings only spin when your foot is holding the clutch pedal down and they only make noise when they're bad.
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Old 12-26-2008, 08:16 PM   #14
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Thanks for all of the follow up on the transmission grinding. I posted that my trans was grinding and the mechanic said I needed a new trans. At that time I didn't trust him, now after seeing others postings I am convinced that the grinding of some jeep trans are just a Jeep thing and I am going to jeep without a worry.
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Old 12-29-2008, 01:39 PM   #15
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Throwout bearings only spin when your foot is holding the clutch pedal down and they only make noise when they're bad.
I thought the throw out bearing is always spinning except when you push the clutch in.
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Old 12-29-2008, 03:55 PM   #16
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I thought the throw out bearing is always spinning except when you push the clutch in.
Just the opposite. The throwout bearing's function is to lift the clutch up off the flywheel when you step on the clutch. The splined clutch disk fits over the splined transmission input shaft which is inserted into the flywheel opening so it spins with the engine. The throwout bearing inside opening area is larger thn the shaft diameter and is not splined so the input shaft it is positioned around doesn't spin it. When you step on the clutch, that forces the throwout bearing against the clutch disk to lift it away from the flywheel and it is the clutch disk itself that starts the throwing bearing spinning when the throwout bearing lifts the clutch disk.
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Old 07-14-2010, 11:37 PM   #17
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05 rubicon clutch chatter, box of marbles

I've had this chatter noise since i bought mine in 2005. Manual transmission SWB Rubicon. I made it a point to be sure the dealer documented my comments about the noise early on under 10K miles. My warranty expires in 2012. I just did the 30K trans/tranfer/diff oil changes using mopar oil and kept the reciept. I visit the dealer friday to document this again, have the tech look it over under warranty, and be on my way. My jeepn buddy bought one around the same time and it doesn't chatter. I think it may a cracked main rear bearing or could be some typical gear chatter from this particular box and everything will be ok. If not I'll have a strong case.. Either way, I don't care, I love my Rubicon!
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Old 09-18-2014, 12:25 PM   #18
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2005 Wrangler Sport - 6-sp noise

Hopefully resurrecting this thread makes more sense than starting another since there's already some pretty good info here.

Symptom: Noise that sounds like a small rock bouncing around.

When: ONLY when the trans is in gear and clutch is released to friction zone; continues when clutch is fully released. Stops when fully underway, or at least is quiet enough that even at <10MPH it's not audible anymore. You have to strain to hear it unless there's a wall nearby for echo.

Seems like the opposite timing for a throwout bearing, right? It just started (102K). Clutch operates completely normally, and trans still shifts perfectly smoothly. Friction zone does not seem to have moved relative to clutch pedal travel.

Little help?

Thanks!
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Old 09-23-2014, 04:00 PM   #19
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(Bump) - anyone?
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Old 09-23-2014, 04:43 PM   #20
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Originally Posted by geoffmarton View Post
Hopefully resurrecting this thread makes more sense than starting another since there's already some pretty good info here.

Symptom: Noise that sounds like a small rock bouncing around.

When: ONLY when the trans is in gear and clutch is released to friction zone; continues when clutch is fully released. Stops when fully underway, or at least is quiet enough that even at <10MPH it's not audible anymore. You have to strain to hear it unless there's a wall nearby for echo.

Seems like the opposite timing for a throwout bearing, right? It just started (102K). Clutch operates completely normally, and trans still shifts perfectly smoothly. Friction zone does not seem to have moved relative to clutch pedal travel.

Little help?

Thanks!
Geoff
Most likely a broken clutch return spring in the bell housing. It's a little spring clip that holds the release arm back against the ball that it pivots on. It won't really hurt anything not being there...just annoying. Take a look at the last minute or so of this video and it will point it out.
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Old 09-23-2014, 05:09 PM   #21
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Dennis, thanks!! That couldn't possibly have been more perfect. Seeing that video makes me confident this is my problem. I really appreciate you taking the time to find that.
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Old 09-23-2014, 06:02 PM   #22
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Originally Posted by grntoad View Post
I have the same sound from my Jeep transmission. It is not the throw out bearing because when I push the cluch pedel down the sound stops. When I let the clutch out the grinding sound starts. I had a mechanic check it and he said I need a new transmission. I said bull it is the bearing on the main trans shaft. I asked him what will happen if I keep driving the Jeep. He said the bearing may lock up. I said when it does I will know what the problem was. I am driving the Jeep until it locks up or something else happens.
my 02 does the exact same thing, hoping new LUK clutch kit will fix
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Old 09-23-2014, 06:06 PM   #23
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my 02 does the exact same thing, hoping new LUK clutch kit will fix
Read post #13 above.
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Old 09-23-2014, 07:55 PM   #24
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Dennis, thanks!! That couldn't possibly have been more perfect. Seeing that video makes me confident this is my problem. I really appreciate you taking the time to find that.
No problem finding it, we made it....
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Old 09-25-2014, 11:05 PM   #25
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Dennis,

Nothing to add...except nice video. My wife was watching me with a bizarre look as I sat there (without a clutch / transmission issue...knock on wood) watching you all tear it down. Go figure.
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Old 09-25-2014, 11:09 PM   #26
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I read once that the 6sp tranny doesn't have enough insulation installed, so you hear the noise that it should make anyway.
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Old 09-25-2014, 11:41 PM   #27
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I read once that the 6sp tranny doesn't have enough insulation installed, so you hear the noise that it should make anyway.
Same with the 5-speed AX15 and NV3550 transmissions too.

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