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2000 Mercury Mountaineer differential?

Tiny
TBOARD
  • MEMBER
  • 2000 MERCURY MOUNTAINEER
Noises problem
2000 Mercury Mountaineer Four Wheel Drive 146000 miles

my suv makes a loud humming noise, the more I accelerate the louder it gets, also when I put it in reverse and start to bac up its like something is grabing it trying to hold it bac, a mechanic told me it was my differential but I want a 2nd opinion before I spend alot of money
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Wednesday, November 11th, 2009 AT 2:46 PM

1 Reply

Tiny
RICKMAR
  • MECHANIC
  • 170 POSTS
Have you changed your differential fluid at some point during the 146,000 miles driven?
If you have not. I would do a flush and fill.

If the problem persists then something needs to be replaced gear wise.

I hope it is just a flush and fill.
If you have a limited slip differential which I am quite sure you do, make sure you add the adhesive additive in the "rear" only.

Good Luck;
Rick
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Friday, November 13th, 2009 AT 9:25 PM

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