Question about Mercury Mountaineer

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This is a awd it keeps burning up front diffs went through 3 used complete units gear ratio is correct tire size is correct only happens on long trips it is a 2004 mercury mountaineer

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  • Anonymous Sep 26, 2008

    Front Axle whines starting around 25mph, The tire sizes are correct and the car has never been in for major repairs or component replacement. Axle whine from front end.

  • Anonymous Nov 01, 2008

    We had both front and rear differentials burn up on 2003 AWD Mountaineer - at approx 60,000 miles.

  • Anonymous Jan 14, 2009

    growling in the front end on V8 AWD when turning corners...what is this a $3000.00 fix?????

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Have someone inspect the rear diff. ive seen diffs changed to diffrent ones and not change the tag. your problem might be in the back. hope this helps good luck

Posted on Sep 20, 2008

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1 Answer

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It is impossible to calculate with out knowing the over drive ratio (5th gear) and the diff ratio and tire size but with most vehicle with 5 speed boxes it should be in the 3000 to 3500 rpms range
The average vehicle at 74 miles/hr or 120 k/h runs around 3200 rpms
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