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Old 01-27-2016, 05:46 PM
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bcredliner bcredliner is offline
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The source of a leak can be very misleading. Lubricants of the motor, transfer case and transmission look and smell different. I would start there. If that doesn't help then clean the area and check after 25 miles of driving or so when it will be easier to find the source. You can also check the transmission and transfer case fluid levels easily. Unless you are seeing oil spots on the ground after your X has been sitting for overnight or more, that can be an accumulation of a very small leak that you won't likely find until it gets worse. The leak may be as far away as a valve cover leak.

One check of the joint is going from neutral to drive, neutral to reverse at an idle while holding the holding the break and see if you hear an unusual noise. There is some play that is normal and it could also be a problem downstream. Driveline issues often include vibration.

If the problem is only when the transmission downshifts under hard acceleration it could transmission or torque convertor related.
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