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Old 04-21-2014, 11:19 AM   #1
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Knocking noise around the flywheel when in neutral.

Ive seen alot of people on here say its most likley the throw out bearing. My question is, shall I make priority to fix it or not? How long could it be like that? Is it detrimental to my jeeps' overall health?

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Old 04-21-2014, 11:24 AM   #2
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Does it disappear when you push in the clutch? I've had that problem forever. I've change out the clutch and all bearings when i had to and the sound is still there. figured it was just a jeep thing.

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Old 04-21-2014, 11:30 AM   #3
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Yeah, if I push the clutch it goes away. So im not sure if I should worry about it.
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Old 04-21-2014, 11:43 AM   #4
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A knocking sound is not normal but a spinning bearing sound that goes away when you step on the clutch pedal is 100% normal.
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Old 04-21-2014, 11:49 AM   #5
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Ok, so I shouldnt worry about it... I have a list of appearance changes I want to fulfill. But whats the point of it looking good if it dont run good. Just trying to prioritize.
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Old 04-21-2014, 02:48 PM   #6
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It could be something as minor as a broken clutch return spring in the bell housing, in which case, it's just more annoying than anything else. If that's what it is, it won't hurt anything. Watch the last few minutes of this video.

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Old 04-21-2014, 02:58 PM   #7
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I know that if I slightly push the clutch the sound goes away even after I let go of the clutch. If I completly press it, when I release it comes back.
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Old 04-21-2014, 03:03 PM   #8
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And if it might help, it started doing it after being put under some pressure. I was stuck in an akward position, in the process of geting pulled out I noticed that. And I had some oil come out of my rear main seal if im not mistaken, ive cleaned the area and theres no permanent leak. So I just changed the oil.
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Old 04-21-2014, 03:53 PM   #9
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I have the same issue, and have had it for about a thousand miles, foot off the clutch (engaged) rattle, foot on the clutch (disengaged) no rattle. It's the throw out bearing spinning and it is just worn out, something to eventually be done, but it's not going to stop working for a little while. If you get the chance to do it, I would, but I wouldn't fret over it, unless of course you've been driving on it for 10 thousand miles lol
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Old 04-21-2014, 04:09 PM   #10
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Ive only driven it about 15 miles, its my weekend driver. I dont drive my vehicles during the work week. Saves me from adding unesessary miles to it. Ive just been paranoid since the "incident"...
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Old 04-21-2014, 04:24 PM   #11
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Originally Posted by STiCory View Post
I have the same issue, and have had it for about a thousand miles, foot off the clutch (engaged) rattle, foot on the clutch (disengaged) no rattle. It's the throw out bearing spinning and it is just worn out, something to eventually be done, but it's not going to stop working for a little while. If you get the chance to do it, I would, but I wouldn't fret over it, unless of course you've been driving on it for 10 thousand miles lol
You have it a little back asswards there, throw-out bearing should only make noise when the clutch is depressed, as that is when the bearing is spinning. Otherwise it is disengaged.
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Old 04-21-2014, 05:14 PM   #12
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You have it a little back asswards there, throw-out bearing should only make noise when the clutch is depressed, as that is when the bearing is spinning. Otherwise it is disengaged.
You are correct to a point, the throw out bearing is still spinning regardless of its position. They can make noise either way depending on which portion of the bearing is bad. They can rattle at rest, or they can grind/ whir when the pedal is pushed.
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Old 04-21-2014, 05:21 PM   #13
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Well the rattle does intensify a little while I take off. Once im moving its non existant, or I cant hear it at least.
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Old 04-21-2014, 05:22 PM   #14
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You are correct to a point, the throw out bearing is still spinning regardless of its position. They can make noise either way depending on which portion of the bearing is bad. They can rattle at rest, or they can grind/ whir when the pedal is pushed.
The bearing does not spin when the clutch is engaged, it only spins up when depressed.
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Old 04-21-2014, 05:28 PM   #15
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The bearing does not spin when the clutch is engaged, it only spins up when depressed.
^^^this..!
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Old 04-21-2014, 07:38 PM   #16
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It could be something as minor as a broken clutch return spring in the bell housing, in which case, it's just more annoying than anything else. If that's what it is, it won't hurt anything. Watch the last few minutes of this video.

That spring is there to hold the clutch arm on the pivot arm untill the tranny has been stabbed, it isn't a return spring.
The pressure of the slave cyclinder rod keeps constant pressure on the pivot side and the throwout bearing is turning the whole time the motor is running.
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Old 04-21-2014, 08:02 PM   #17
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That spring is there to hold the clutch arm on the pivot arm untill the tranny has been stabbed, it isn't a return spring.
The pressure of the slave cyclinder rod keeps constant pressure on the pivot side and the throwout bearing is turning the whole time the motor is running.
You probably should go ahead and let Chrysler know that they are wrong and used the wrong terminology in the FSM. The fact is, that it is a return spring and if you have the transmission out sitting on the floor and pull the throw out arm forward, the spring will in fact pull the arm back when you release. If the slave cylinder maintained pressure on the throwout arm to keep the opposite end against the ball, it would also force the throwout bearing to constantly ride on the pressure plate, which it doesn't.
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Old 04-21-2014, 08:20 PM   #18
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Quote:
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It could be something as minor as a broken clutch return spring in the bell housing, in which case, it's just more annoying than anything else. If that's what it is, it won't hurt anything. Watch the last few minutes of this video.

Ive watched the video and it makes perfect sense, I beleive im ready to diagnose. Now the question is, is it a must fix asap kind of problem? Or can it run like that? Thanks for the vid recomendation, and help Water Dog. Floridarubi is offline   Quote Quick Reply
Old 04-21-2014, 08:23 PM   #19
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I should rephrase the question as its already answered, noticed after posting. Will it affect the longevity of the system?
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Old 04-21-2014, 08:28 PM   #20
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Ive watched the video and it makes perfect sense, I beleive im ready to diagnose. Now the question is, is it a must fix asap kind of problem? Or can it run like that? Thanks for the vid recomendation, and help Water Dog.
If that is in fact the problem, it won't hurt a thing to run it like that. The spinning pressure plate will keep the throw out bearing thrown off, it's mostly just the noise you'll have to live with. Typically the noise that is associated with a broken return spring is kind of a rattle...not sure if that is what you have or not.
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Old 04-21-2014, 08:36 PM   #21
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Yeah, its just a constant tick tick tick tick tick. And when I press down on the clutch it dissapears. If I slightly press on the clutch to where the sound is almost surpressed and release the clutch slowly the sound stays away. From almost every angle its leading me to beleive its the spring.
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Old 04-21-2014, 08:37 PM   #22
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Yeah, its just a constant tick tick tick tick tick. And when I press down on the clutch it dissapears. If I slightly press on the clutch to where the sound is almost surpressed and release the clutch slowly the sound stays away. From almost every angle its leading me to beleive its the spring.
Sounds like a good possibility.
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Old 04-21-2014, 08:43 PM   #23
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Ill keep an eye, or should I say ear on it. Making sure nothing else is out of tune. But for now thanks alot for the advice.

KEEP ON ROLLING!
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Old 04-21-2014, 09:24 PM   #24
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You probably should go ahead and let Chrysler know that they are wrong and used the wrong terminology in the FSM. The fact is, that it is a return spring and if you have the transmission out sitting on the floor and pull the throw out arm forward, the spring will in fact pull the arm back when you release. If the slave cylinder maintained pressure on the throwout arm to keep the opposite end against the ball, it would also force the throwout bearing to constantly ride on the pressure plate, which it doesn't.
So, Do you think the clip returns the arm when the tranny is stabbed? ha. The DA's at Chrysler didn't build the tranny, they have in the past and will in the future get shit wrong, recalls.

Do you think the hydraulic pressure in the master/slave system releases when the clutch isn't pushed?

Go out to your Jeep and push the clutch pedal. I bet you feel resistance from the very top. The few inches it takes for the clutch disc to disengage is the distance it takes for the pressure plate to release the disc off of the flywheel.
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Old 04-21-2014, 09:43 PM   #25
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Yeah, its just a constant tick tick tick tick tick. And when I press down on the clutch it dissapears. If I slightly press on the clutch to where the sound is almost surpressed and release the clutch slowly the sound stays away. From almost every angle its leading me to beleive its the spring.
It's the pilot bearing making the noise. How many miles do you have on the clutch?
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Old 04-21-2014, 09:46 PM   #26
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So, Do you think the clip returns the arm when the tranny is stabbed? ha. The DA's at Chrysler didn't build the tranny, they have in the past and will in the future get shit wrong, recalls. Do you think the hydraulic pressure in the master/slave system releases when the clutch isn't pushed? Go out to your Jeep and push the clutch pedal. I bet you feel resistance from the very top. The few inches it takes for the clutch disc to disengage is the distance it takes for the pressure plate to release the disc off of the flywheel.
Your talking crap at the wrong dude. The clip allows the release fork to stay stable to release the clutch. With out it the other end of the release fork can come off the pivot ball. Binding the throwout bearing and causing tons of cool sounds and problems depending where the fork goes off the ball. May even be intermittent if the fork lands on the ball again. Ya return spring is a stupid name. I think he said so.
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Old 04-21-2014, 09:51 PM   #27
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Yeah, its just a constant tick tick tick tick tick. And when I press down on the clutch it disappears.
DEFIANTLY not your pilot bearing. It only moves when the pedal is down.
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Old 04-21-2014, 09:58 PM   #28
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So, Do you think the clip returns the arm when the tranny is stabbed? ha. The DA's at Chrysler didn't build the tranny, they have in the past and will in the future get shit wrong, recalls.

Do you think the hydraulic pressure in the master/slave system releases when the clutch isn't pushed?

Go out to your Jeep and push the clutch pedal. I bet you feel resistance from the very top. The few inches it takes for the clutch disc to disengage is the distance it takes for the pressure plate to release the disc off of the flywheel.
There exist an approximately 1/16" to 1/8" gap between the face of the throw out bearing and the pressure plate fingers (with the clutch up). Between the spinning pressure plate and the slight spring pressure of the return spring there is enough pressure to overcome the little bit of hydraulics left in the system that is already flowing back to the master cylinder from the pressure plate springs.

I can see that you aren't impressed by what the car maker has to say on the subject, but "just in case" they might know what they're talking about, here's an excerpt from the FSM. Notice that if the release arm brings the throw out bearing "into contact", that it must have been out of contact originally.

If you're still not convinced, I'm done here. BTW, I think I know how a clutch works, I've been doing them for forty years.
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Old 04-21-2014, 10:08 PM   #29
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defiantly not your pilot bearing. It only moves when the pedal is down.
^^^x2
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Old 04-22-2014, 06:43 AM   #30
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DEFIANTLY not your pilot bearing. It only moves when the pedal is down.
I'm pretty sure you don't know what a pilot bearing is by reading that statement?

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