Question about 2001 Jeep Grand Cherokee

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01 Jeep Grand Cherokee Laredo 4.7L Rear end hum. Not a whine, same sound 10mph and up. Parking lot speed sounds hollow and maybe a very slight grind noise. When going down a hill and I let off the gas it goes away for a bit, when put in neutral and coast the noise stays the same. Thanks!

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  • Jeep Master
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Id change the axle fluid first

Posted on Feb 20, 2018

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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  • 6982 Answers

SOURCE: 94 jeep grand cherokee laredo v8 5.2l automatic.

You can check fluid level by removing the rubber plug in the cover. Fluid is full when on level ground, it is just at the edge of the hole (or very close) if you are already getting noises out of there, you can remove the cover and inspect gears for wear or breakage. If you find a large amount of metal debris in the lube it tells you something bad is going on back there. Although rebuildable, it's not a home job...requires exact settings in order to operate properly. You can find good units far cheaper than even a gearset costs in any scrapyard. to match ratio, count the teeth on the ring gear and the pinion gear. the replacement MUST have the exact same number. Before swapping diffs, check all back there to make sure noise is not from somewhere else.

Posted on Jun 20, 2009

peterrance19
  • 399 Answers

SOURCE: if i happen to coast or drive in neutral down hill

nothing wrong safty factor stop coasting

Posted on Nov 12, 2009

  • 99 Answers

SOURCE: Truck has a humming noise from the rear end which

Sounds like the rear end itself, most likely if u have high mileage.

Posted on May 22, 2010

Testimonial: "That is absolutely my thoughts as well.I was hoping not to hear that, but was expecting that. It has 215k on the drivetrain, so I guess it is time for replacement. This is my first 4 wheel drive, so I am learning as I go. Thank you for your time and insight. Just have to find an affordable place in DFW to get the gears."

  • 233 Answers

SOURCE: Have a whining noise coming

that sounds right

Posted on Jan 20, 2011

  • 2 Answers

SOURCE: 96 jeep grand cherokee laredo popping/grind noise when turning l

Ifound the same condition in the rear end of my 1993 Jeep Grand Cherokee Laredo with 4.0 HO L-6. I opened up the differential and removed the spider gears and axles to get the components out for inspection. I discovered that of the two
clutch packs that are on either side of the axle housing behind the side/axle
gears, the drivers side clutches had a huge break in the main washer "HUGE"
that is directly behind the side/axle gear. Fluid was not unusually dirty but
does show alot of silver clouding from the loss of metals due to the clutches
slipping and grinding when that crack would allow contact loss. Hope that helps

Posted on Dec 05, 2011

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You can check fluid level by removing the rubber plug in the cover. Fluid is full when on level ground, it is just at the edge of the hole (or very close) if you are already getting noises out of there, you can remove the cover and inspect gears for wear or breakage. If you find a large amount of metal debris in the lube it tells you something bad is going on back there. Although rebuildable, it's not a home job...requires exact settings in order to operate properly. You can find good units far cheaper than even a gearset costs in any scrapyard. to match ratio, count the teeth on the ring gear and the pinion gear. the replacement MUST have the exact same number. Before swapping diffs, check all back there to make sure noise is not from somewhere else.

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