Whirrling noise under car

Tiny
JOEY JO
  • MEMBER
  • 1998 FORD EXPLORER
  • 165,000 MILES
I have asked this question before and you gave me some tips on how to fix the problem, so I had a mechanic check my rear differential and he said it needed a ring and pinion gear. I had tha done, but the noise is still there. Can the transfer gear case make that noise or is it the front Diff, please advise thanks. Oh by the way its a 98 explorer 4.0 v-6 sohc 4 wheel drive
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Tuesday, April 16th, 2013 AT 8:02 PM

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Tiny
JACOBANDNICKOLAS
  • EXPERT
Can you describe the noise?
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Tuesday, April 16th, 2013 AT 8:18 PM
Tiny
JOEY JO
  • MEMBER
Its a high pitched type of sound, kinda like a old fan wearing out, A whirrling type of noise that only happens when the truck is in gear and accelerating and stops when I let up o the gas, kinda sounds like a old fan thats wearing out. Hope that helps, thanks in advance for your help
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Wednesday, April 17th, 2013 AT 11:17 AM
Tiny
JACOBANDNICKOLAS
  • EXPERT
Based on your description, I believe it is the fan clutch that is locking up to cool the engine down.
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Thursday, August 8th, 2013 AT 7:23 PM

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