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Old 12-09-2009, 10:10 PM   #1
Newb
 
Join Date: Apr 2009
Posts: 1
vibration under load

Ok I have a 97 jeep wrangler 4.0 5spd and I am stumped, along with my friend who is a chrysler mechanic.
I get vibration between 30 and 40 while the engine is under load (accelerating, decellerating)
I have already:
replaced the rear u joints = no luck
replaced harmonic balancer = improvement, but still there
All wheel bearings are good
However...
The right front wheel U joint is no good
wheels/tires out of balance.
The tires don't cause vibration till the highway (60mph +)
I don't think it is the front U joint because I only have a problem while it is under load in 2wd
Any more ideas?

jfranknbeans is offline   Quote Quick Reply
Old 12-09-2009, 10:27 PM   #2
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Join Date: Oct 2009
Location: San Diego
Posts: 759
Well definitely replace the U joints, but the wheels/tires being out of balance could be it. I know when I wore my factory tires down by never doing a tire rotation, I felt vibrations. If you dont fix it now chances are the vibrations will only get worse.
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