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Chaoul1 11-01-2011 09:59 PM

Pretty Sure I Blew my Rear Differential (ELSD)
Went on a little road trip on Friday and while Route 66 everytime I would let go of the gas the rear end our vibrate intensively for a second and then stop and be normal. I stopped at my cousins house to pick him up since wewere all going together down to JMU for Halloween. Anyway car was full and trunk was full also. Jeep is still vibrating everytime you let off the gas pedal.

Then all of a sudden we hear a pop from the rear as if something metal broke. The it started Vibrating/shakingthe rear even worse everytime you let go off the gas, but this time you can hear everything going on in the rear. It's like grinding/shaking everytime you let go of the gas.

When you have your foot on the pedal you don't hear anything and feel anything except some slight shaking/ or slight vibrating. We made it down to JMU and parked it. We drove it back and was doing the same thing, so now the Jeep is sitting in front of my house. I don't want to drive it and make it worse.

So every time I let go of the gas pedal you hear grinding and the rear shaking until you step on the gas. If you press on the gas lightly it goes away.

Anyone else have this problem before? I'm pretty sure the rear is done. You can hear it howling/grinding/vibrating every single time you let go of the gas and sometimes vibrating when accelerating. BUT once you press on the gas you don't hear anything.

I have a 2005 Jeep Grand Cherokee with Quadra-Drive II which has ELSD.

2005JGC 11-04-2011 03:34 AM

Re: Pretty Sure I Blew my Rear Differential (ELSD)
I wonder if this is related to your "transfercase" problem you were having...

either way I would love to give an guess but over thei interwebz its difficult to iron down where noises are coming from ;) , typically grinding isnt good... duh right?

Not to hurt your feelings or scare you but personally I love isolating a major noise like a diff noise and doing my tear down and locating the problem, some minor noises can be narrowed down with a stethoscope or chassis ears and combine with the those readings and considering symptoms and what could cause the noises you repair the part you have deturmined to be the failure... during the repair process you dont really find the smoking gun, put it back together and viola, it did repair the problem... I am guessing this wont be a problem in your situation, there will likely be a smoking gun ;)

good luck!

Chaoul1 11-04-2011 09:09 AM

Re: Pretty Sure I Blew my Rear Differential (ELSD)
It's going to be looked at soon. Currently it's sitting In front of my house. It's not the transfer case since it is coming from the rear end. When I put it in reverse there is a slight grind also.

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