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Old 05-06-2007, 09:07 AM   #1
Join Date: Aug 2005
Location: Maine
Posts: 73

In the last couple days I have developed a problem that appears to be getting worse. Anytime I'm on the gas while in gear, at any speed in any gear, the whole Jeep begins to shudder or vibrate. When I take my foot off the gas, it smooths right out. In neutral or w/ the clutch pressed in, regardless of the speed I'm travelling, it smooths right out. There is no grinding or whine that I've noticed. There is no change when turning in either direction. There is no clunking when getting on and off the gas. I've grabbed the rear drive shaft, no play or looseness detected. I see no fluids leaking. And, I have not wheeled it in a couple months (a travesty, I know) so I can't imagine I dented or warped the driveshaft.

What could be causing this vibration? I'm not driving this rig until I can fix it, b/c I'm convinced something is gonna go and I'll be stranded.

'97 6cyl TJ
'79 6 cyl FSJ Cherokee
'68 M715
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Old 05-06-2007, 09:15 AM   #2
Odhinn's Avatar
Join Date: Aug 2006
Posts: 2,147
Could be several things, U-joints, Control arms. Drive shaft. I would go through the suspension/driveline with a fine toothed comb. Use a prybar to check all your joints and bushings for play. Also check your motor mounts, transmission mount, and TC mounts (including where the crossmember attaches to the frame). Sounds to me like you have something loose or broken in the driveline, something that is only stressed when torqued. Also, I hate to say this, it could be internal with the Transmission/TC/axles.
Recently returned from the Jeep Dead.
Proud daddy to a New baby Jeep Girl.
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