Grand Cherokee Shake Shack - Vibration -
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Unread 08-27-2003, 07:56 AM   #1
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Grand Cherokee Shake Shack - Vibration

We just overhauled the viscous coupling in our 94 GCL with mixed results. After noticing that one of the tires that NTB installed was a different rating (but right size) and had worn faster than the others, it became obvious why the 4 wheel drive system was starting to fail. So we put in new front drive axles and had the transfer case rebuilt.

Here's the issue: At 50 MPH and above, the whole truck vibrates like crazy. We thought replacing the VC in the transfer case would solve the original issue of bucking and jumping and also the vibration problem. It didn't solve the virbration problem and its been getting notacably worse.

NTB replaced the front tires, rebalanced all 4 and did the alignment. So that rules out the vibration being a tire issue. The virbration is most noticable under accelleration so we're pretty sure its drive train related.

Anyone been down this road before??

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Unread 08-27-2003, 08:00 AM   #2
Swamp Boy
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Join Date: Jan 2003
Location: New Orleans
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Check you drive shaft to see of you need new U-joints and make sure the balance weight is still on it..
Also might try replacing steering stabilizer..

Hope that helps..

Just another soccer moms Grocery getter....
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Unread 08-27-2003, 08:04 AM   #3
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Are these the U-joints on the drive shafts that come out of the transfer case (forward and backward)?, I'm not familiar with the counter weight. Whats it look like?

Thanks for your response!
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Unread 08-27-2003, 07:03 PM   #4
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A common problem with vibration in a grand a higher speeds is the front drive shaft. The only way to verify this is to pull the front drive shaft and drive it again. "BEWARE WHEN YOU PULL A FRONT DRIVE SHAFT FROM A ALL WHEEL DRIVE 93-98 GRAND CHEROKEE IT WILL NOT HOLD IN PARK, IT WILL ROLL IN PARK." KEEP THIS IN MIND PLEASE......
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