The Mud Pit > Wrenching

yj 4wd issues

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PaulW:

--- Quote from: The_Thickness on May 21, 2009, 01:16:08 PM ---it does the same thing in 4 low. it engages fine no problems with it. shifting out is easy other then the only way to get the front end to unlock is drive in reverse for about 10 ft. when its is in 4 wheel drive about the time it locks up if i remember correctly the drive side tire still wants to rotate or it atleast feels like it.

--- End quote ---

i had an 89 that did the same problem.  ended up having a bad 4wd vacum switch that left the front diff engaged all the time.  my mom knew when i borrow her jeep because it would have bad vibrations on the highway from being stuck engaged. 

The_Thickness:
we tested out the vaccum it works fine with engaging and disengaging theres no noise from it or vibrations ive almost ran out of ideas on what it could be

PaulW:

--- Quote from: The_Thickness on May 21, 2009, 02:08:07 PM ---we tested out the vaccum it works fine with engaging and disengaging theres no noise from it or vibrations ive almost ran out of ideas on what it could be

--- End quote ---

we then that eliminates the shift actuator.  have you pulled the diff cover to look for chunks yet?  or possibly you have a binding u-joint in the front end?

tx_country:
Pulled the diff last weekend... No chunks... U joint is possible tho... How do you test that? (This is my 1st jeep so I don't know a lot)

kirksjeep:
 
[/quote]
we then that eliminates the shift actuator.  have you pulled the diff cover to look for chunks yet?  or possibly you have a binding u-joint in the front end?
[/quote]

The U-joints spin all the time since they are directly attached to the hub via the outter axle shaft, how could they cause this only in 4wd?

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