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Old 04-12-2007, 03:44 PM
UncleBob UncleBob is offline
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Re: 1994 Explorer 4 wheel drive problem

could be u-joints, although its usually pretty obvious. Although there is no load on the front u-joints, so they take a long time to fail. Last time I did a u-joint on one of those, it had over 200K miles on it. I would expect vibration on the freeway if it was that bad

Its either in the auto hubs (incorrectly assembled) or its the engagement solenoid.....but its quite easy to incorrectly assemble those auto hubs. Why were the replaced anyway? Only time I've seen them fail was when the bearings were so bad the wheel almost fell off
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