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Grinding noise from underside

Tiny
WEAVERDR81
  • MEMBER
  • 1999 JEEP GRAND CHEROKEE
  • 167,000 MILES
I have a 1999 Jeep Grand Chrokee with an automatic inline 6 all time 4WD and 167,000 miles (engine replaced 4,000 miles ago) I've noticed a sound like grinding gears coming from somewhere close to the front differential but only after it's been driven 30 min or more. I've checked the transmission and it's fluids and everything seems to be good. I'm not sure what else to check.
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Friday, July 8th, 2011 AT 12:47 PM

3 Replies

Tiny
CJ MEDEVAC
  • MECHANIC
  • 11,004 POSTS
Is this more like a "chatter", when performing turns?

The Medic
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Friday, July 8th, 2011 AT 1:44 PM
Tiny
WEAVERDR81
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  • 2 POSTS
No it sounds the same as when someone misses a gear in a manual transmission and it happens on straight aways and turns
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Sunday, July 10th, 2011 AT 12:55 PM
Tiny
CJ MEDEVAC
  • MECHANIC
  • 11,004 POSTS
I'm pretty sure you have positive traction. Have you changed your differential juice and used the additive required to be used with positive traction systems?

The Medic
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Sunday, July 10th, 2011 AT 4:12 PM

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