Question about 2001 Jeep Cherokee

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Rear Differential The mechanic said that the whirring noise coming from the rear of my jeep cherokee with only 60,000 miles was because my rear differential was shot. He recommended that I rebuild it completely using used parts since the labor to take out the bits of metal would be more costly. He also said they had migrated toward my bearings (these are new!). But to rebuild this differential/axle will be around $2000 dollars! I am not sure that my jeep (she has given me other problems) is worth repairing for that much! The mechanic said that there is no telling how long before this problem causes the car to "seize up". Since I drive it very infrequently should I just have a mechanic put more differential oil in the car? The mechanic said that this would not help, but would it at least stall the problem? Would ignoring the noise and driving the jeep be dangerous? Thanks very much!

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  • tatehoeffel Aug 12, 2008

    Thank you so much jigsawbill!



    Do you think that $2000 for a complete rear end rebuild is a reasonable cost?



    How can I politely verify to be certain that the mechanic I have the car with now is qualified for rear end rebuilding?



    Thanks again!

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The mechanic is right, you should fix it before the differential back there either locks up or strips teeth, in either case you will be stranded. Probably your best bet is to check out a used, complete rear end, and install it. One major precaution if you go this way, you must replace yours with the exact same ratio. There should be a tag under one of the cover bolts which will show your ratio. He is also right about rebuilding with new parts, and in addition to cost of parts, is hard to find someone who is qualified to set it up once repairs are made. Rebuilding rear ends requires special training, and many mechanics do not have it.

Posted on Aug 12, 2008

  • bill  willis
    bill willis Aug 12, 2008

    I would ask around for someone who knows about his work, and of course they have certification programs now for all reputable techs. He should have his credentials displayed in the office or such.

  • bill  willis
    bill willis Aug 13, 2008

    Word of mouth is a great indicater, I would ask around my friends and acquaintances see if someone knos of this shop,and a check with Better Business Bureau could give you some indications of his credibility. A good reputation will indicate honesty, hence believable.

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