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Unread 09-13-2007, 11:48 PM   #1
nolo263
Registered User
1998 TJ Wrangler 
 
Join Date: Mar 2007
Location: laredo
Posts: 325
Need help with vibration or bucking???

Hello I need help with my jeep it vibrates or bucks when letting out clutch from a stop.. I also feel like the clutch suddenly comes in to quickly while I am shifting and you can feel the jeep kinda jar. Its not the engine, its not the tranny mount I am pretty sure its not the motor mounts. I raised the back on jackstands and had my wife let the clutch out slowly and you can see the bucking. I hate this help me figure it out..

Could it be the slave cylinder or master cylinder??

Bad clutch ??

Help me out..

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Unread 09-14-2007, 05:49 AM   #2
Rule303
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1998 TJ Wrangler 
 
Join Date: Mar 2006
Location: USA
Posts: 2,078
Mine does something similar, even after I installed a new clutch. Very abrupt clutch engagement.

A leaky rear main seal could be causing the clutch to grab.

How are your U joints?
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Unread 09-15-2007, 02:34 PM   #3
nolo263
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1998 TJ Wrangler 
 
Join Date: Mar 2007
Location: laredo
Posts: 325
u joints look ok .. This is really bugging me.. any more ideas??
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Unread 09-15-2007, 02:35 PM   #4
nolo263
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1998 TJ Wrangler 
 
Join Date: Mar 2007
Location: laredo
Posts: 325
could a bad master or slave cylinder do this??
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Unread 09-15-2007, 02:36 PM   #5
Rule303
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1998 TJ Wrangler 
 
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Location: USA
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I doubt it.
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Unread 09-15-2007, 02:41 PM   #6
nolo263
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1998 TJ Wrangler 
 
Join Date: Mar 2007
Location: laredo
Posts: 325
I can feel that it does this everytime in the same spot on the release of the clutch. right before it fully engages.
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Unread 09-16-2007, 08:51 AM   #7
Rule303
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1998 TJ Wrangler 
 
Join Date: Mar 2006
Location: USA
Posts: 2,078
Mine does the same thing. The clutch is grabbing. Search clutch chatter on the net. Several causes. Mine did it before and after I changed the clutch. So I'm at a loss why its doing it. I suspect the clutch fork may have come off the ball that it pivots on, which sucks, because I'll have to pull the transmission all over again to fix it. Next time I'll replace anything that moves in there.
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