When driving down the road we can hear a grinding/rubbing noise from the rear and the noise seems to be coming from the passenger side of the back. I jacked up the rear and turned the wheels to see if the brakes may be rubbing, but they did not seem to be.I then put it in gear and let the wheels turn, I could hear the noise, so with the tires still moving I put the ****** in nuetral and the noise stopped as soon as the drive line quit moving.
Hey Dennis,
Have you checked the lube level in the read differential? If its good, you have a wheel bearing going bad. To replace it, you will need to remove the axle.. This is not a hard fix, but you have to have the ALL the tools and you MUST put the rear end up on jack stands..DO NOT use a jack to hold the rear end up.. IF you are not very mechanically inclined, please take this to a qualified professional..
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SOURCE: 2000 Jeep GC LTD - Quadra Drive Does Not Engage Front Wheels
the 247 doesnt use solenoids but oil pressure from a gerotor pumps driven by the front and rear driveshafts to a progressive coupler. a set of orifices and valves direct fluid to the coupler to determine how much torque is sent to which set of wheels
SOURCE: 2000 jeep grand cherokee quad drive but onlythe rear wheels turn
usualy you will only have two tires spin at a time even in 4 lo or 4high. those tires are going to be diaginal from each other tipicly. now since your vehcle is equiped with quad drive it may employ a limited slip rear differential to help it along. however this only afects the rear axle. now you can test it by jacking your vehicle up and setting it on jack stands. one for each wheel onder the axle tube on a good solid (concreat or black top) flat surface. then have some one you know and trust to get in the car and put it into drive . now you can actualy see what wheels are spinning or not.now is were the limited slip comes in if you have one rear wheel spinning and the other is sitting still the limited slip will engage and start the other wheel spinning . now this may bang until the other wheel catches up (note that the faster the wheel is spinning the harder it is on your truck)now be very carfull stay away from the wheels tires and all other spinning parts it is a machine it can hurt you badly. but give it a try and it will answer your question. be safe hope this helps
SOURCE: 1996 jeep grand cherokee, quadra
Since you aready paid $400, go back to ;the shop and get your $'S worth!! Unless someone can prove that the axle bgs were bad, you shoulld ask why pinion & side gears were not diagonsed!!! (dosen't anyone test drive stuff after they "fix" something anymore??? Dosen't anyone give a damn???
If you can't get anywhere with this, find a junkyard unit and install it yourself. It isn't that hard. Just be sure that new lone has the same mount points and gear ratio matches ratio lof front axle.(count gear teeth if you must)
SOURCE: Rear Suspension noise on 2001 Jeep Grand Cherokee V8
Check sway bar. On some models as suspension sags, sway bar outer ends will contact the body, leaving a mark or dent just above the end, causing a bang over bumps. Only way to correct this is to change springs or add a spring lift.
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