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Vibrations

819 views 5 replies 3 participants last post by  smunns 
#1 ·
I have some weird vibrations going on with my Jeep. They aren't too rough, feel like they are coming from the front, and happen at anything over 45-50mph. They stop if I put it in 4wd, but resume once it's back in 2wd. I plan on pulling my front driveshaft to see if maybe it's out of balance. It has all new u-joints, so the only things I can think of are an out of balance driveshaft, or possibly my D30's u-joints. Any ideas? Am I thinking right?
 
#3 ·
Rocky529 said:
I would check the balance on your wheels and that they are filled with the same PSI.
They are freshly balanced and filled to the same PSI. I just put new wheels and tires on my Jeep last week. The vibes have been going on since before I got the new tires/wheels, so I know that's not it.
 
#6 ·
Pulled the axle end of the front driveshaft, and the vibes went away. I then took the front driveshaft into a local shop and had them balance it. It was balanced, and they confirmed that all my u-joints and the cv centering kit are good. I re-installed the shaft, and although not as bad, I still get vibes. Any other ideas. I find it really strange that they completely go away in 4wd. Could it be the front pinion angle? (3" lift, 1" MML, 1" tcase drop)
 
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