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Old 06-21-2013, 04:51 AM   #1
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High Speed Vibration

A few months ago, we noticed that our '02 Wrangler had developed a high speed vibration. The vibration starts up right around 60 to 62 MPH. It actually seems to lessen a little as speed reduces, but is certainly still there. We initially assumed it was related to the tires which were over 5 years old and badly worn, but we have since gotten new tires and the vibration is still there. I also recently realized that the vibration started around the time we serviced the brakes. Is it possible this is related to an out of balance drum or rotor? Otherwise I'm thinking possible out of balance drive shaft. The vibration is speed related, not RPM related (happens at the same speed regardless of being in 4th or 5th gear).

Any suggestions?

sm

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Old 06-21-2013, 05:50 AM   #2
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Check your u joints.

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Old 06-21-2013, 06:21 AM   #3
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Majority of speed related vibes are from unbalanced tires. Try to find a 4x4 shop that deals with oversized tires or try to find a shop that can road force balance versus spin balance. (some Firestone shops can). You should also have your alignment checked.
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Old 06-21-2013, 06:22 AM   #4
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do you feel it through the steering wheel or your seat and floor more? if its through the steering wheel, your front tires may be out of balance, or wheel bearings may be a little worn out. if through the seat/floor, your rear tires may be out of balance, or a driveshaft (any) may have a bad u-joint in it. when you put the new tires on did you balance them as well? and are they wearing evenly?
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Old 06-21-2013, 07:25 AM   #5
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The vibration is more through the seat, not the steering. New tires were balanced. If anything, the vibration is less with the new tires.

Perhaps its due for an alignment.

sm
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Old 06-21-2013, 07:47 AM   #6
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My 97 does the same thing. At 60 it starts to around 63 then lessens a lot less as speed goes up. I have not done the rebalance yet but am sure it is the tires.
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Old 06-21-2013, 09:38 AM   #7
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Quote:
Originally Posted by jersey steve View Post
The vibration is more through the seat, not the steering. New tires were balanced. If anything, the vibration is less with the new tires.

Perhaps its due for an alignment.

sm
If it's better with new tires, then it's highly likely tire balancing issues, alignment, or a bad wheel.

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