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Strange noise from rear differential

Discussion in '1st Gen. Tacomas (1995-2004)' started by Phessor, Aug 5, 2021.

  1. Aug 5, 2021 at 5:25 PM
    #1
    Phessor

    Phessor [OP] Well-Known Member

    Joined:
    Feb 15, 2014
    Member:
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    First Name:
    Bob
    Vehicle:
    1998 TRD XTra Cab
    Stuff
    I started hearing a strange noise from my rear differential today.
    I put it on jack stands, drained the oil, replaced with Lucas synthetic 75W-90.
    20210805_164318.jpg
    Drain plug...

    Then I placed it in gear and ran it up to 40MPH and this is what I'm hearing.

    https://youtube.com/shorts/p0FwZmQHq7g?feature=share
     
    Last edited: Aug 5, 2021
  2. Aug 5, 2021 at 5:38 PM
    #2
    v5ensx

    v5ensx CARB legal is not CALI legal

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    Sounds like the pinion bearing. With that much shaving, take it out and inspect. You should be able to see where the shaving came from.
     
  3. Aug 5, 2021 at 7:16 PM
    #3
    Phessor

    Phessor [OP] Well-Known Member

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    First Name:
    Bob
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    1998 TRD XTra Cab
    Stuff
    I can't see or feel anything that is bad.
    No chunks in bottom of differential housing.
     
  4. Aug 5, 2021 at 7:18 PM
    #4
    Phessor

    Phessor [OP] Well-Known Member

    Joined:
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    First Name:
    Bob
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    1998 TRD XTra Cab
    Stuff
  5. Aug 5, 2021 at 7:18 PM
    #5
    v5ensx

    v5ensx CARB legal is not CALI legal

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    #138656
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    1,693
    You won't find chunk, just a bunch of shaving
     
  6. Aug 5, 2021 at 8:44 PM
    #6
    Glamisman

    Glamisman Well-Known Member

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    kind of tough to tell from the picture but it looks like the driven side of the ring gear wipe pattern is the full length/width of the tooth, should not be that way.
     
  7. Aug 6, 2021 at 6:47 AM
    #7
    CrippledOldMan

    CrippledOldMan Well-Known Member

    Joined:
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    David
    Salisbury North Carolina
    Vehicle:
    2003 TRD Crew Cab
    None
    it may be an optical illusion, but in post #4 some of the large ring edges on the outside look worn to me. I don't seem to have anything like paint of my macbook to highlight what I'm seeing.
     

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