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Unread 03-14-2008, 06:22 PM   #1
Axl Jack
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1994 YJ Wrangler 
 
Join Date: Mar 2007
Location: Old Forge, PA (Scranton)
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Clutch chattering

AX-15

Currently 150,600 miles. Replaced clutch and pressure plate around 85K, but I'll admit it was only a $110 dollar clutch. Maybe should have gotten a "better" one.

Problem:

I get a little bit of clutch chatter pulling out in 1st, especially when its cold until the tranny heats up.

My rear main seal does not appear to be leaking. I never have any spots on my garage floor. 6 quarts of oil in, 5 3/4 quarts out on oil changes. However, even if it was a minute leak do you think it could be leaking off slightly onto the flywheel and being sprayed onto the clutch? Hence me thinking it gets better once "warmed up" --- meaning that the friction wears off the tiny bit of oil that may have gotten on it and then feels fine.

Or am I looking at a slave issue?

Thankx

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94 YJ w/ stuff. All the work/money I put into it, and the comment I get most is my $20 mod: "Hand throttle?!? That's awesome."
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You know you drive a YJ when it is no longer getting older, but slowly becoming brand new part by part.
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Unread 03-14-2008, 08:09 PM   #2
laybackman
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The clutch is not maintaining full contact with the pressure plate most likely that's why it is 'chattering'. Why it is not can be caused by several factors. A bad TO bearing or a broken 'finger(s)' on the PP. And then some of the clutch material has gone missing and the list goes on. Oil on the clutch would make it slip.

EDIT: If it is doing mostly when it is cold but not when it gets heated up it might be TO bearing related.
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Unread 03-15-2008, 11:41 AM   #3
70sElvis
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What about your flywheel? Did you get a new one or have it roughed up?
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Unread 03-15-2008, 01:16 PM   #4
laybackman
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Quote:
Originally Posted by 70sElvis View Post
What about your flywheel? Did you get a new one or have it roughed up?
Good input! And I knew I was forgetting an important possibility. Damn old brain of mine!
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Unread 03-15-2008, 01:31 PM   #5
70sElvis
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That is the great thing about this forum, Laybackman. Second set of eyes always a big help.
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Unread 03-15-2008, 01:39 PM   #6
laybackman
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Quote:
Originally Posted by 70sElvis View Post
That is the great thing about this forum, Laybackman. Second set of eyes always a big help.
Thank god that's true! The most likely suspect in this case of clutch chatter causes, may very well be that a new clutch & PP was installed along with a new TO bearing, but the flywheel wasn't resurfaced or replaced. Brake job problems can, also, often be attributed to not resurfacing or replacing either the drums or rotors.
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Unread 03-15-2008, 07:02 PM   #7
Axl Jack
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^ Ah, no the flywheel has never been touched.

Thankx for the input! I'm sure I'll have more questions later, but I'm parking the Jeep in two weeks until next winter, switching over to my Honda. I'll drop my tranny over the summer when the semester ends.
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94 YJ w/ stuff. All the work/money I put into it, and the comment I get most is my $20 mod: "Hand throttle?!? That's awesome."
Quote:
Originally Posted by dmcanally View Post
You know you drive a YJ when it is no longer getting older, but slowly becoming brand new part by part.
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Unread 04-07-2010, 12:18 PM   #8
GPII
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Hey you wrote that the problem with a chattering clutch is that it is not maintaining full contact with the pressure plate... I have a chattering clutch but it starts chattering when it gets hot. It would make sense that it would be a warping clutch or pressure plate but just about 8 months ago i replaced both of those. Could it be something different like low fluid... just hoping... i dont want to drop the trans again...
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Unread 04-07-2010, 12:19 PM   #9
GPII
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forgot to mention i put in a reman fly wheel as well...
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Unread 04-07-2010, 12:22 PM   #10
mb1440
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I think it is always a good idea to have the flywheel "turned" anytime you install a clutch just to be on the safe side. Just me 2 cents.
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