1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Grumbling noise? Baseball card in spokes?

Discussion in 'FJ Cruiser' started by Saltydecimator, Jan 17, 2018.

  1. Saltydecimator

    Saltydecimator

    Messages:
    51
    Likes Received:
    5
    Joined:
    Dec 13, 2017
    Location:
    Fort Morgan, CO
    my MIL 07 FJ with a tear diff that has been replaced within past 9mo is making some proportionate to speed noises. Folks she asks says it’s road noise from mismatched tires but I’m not certain. I had it out on some snow over Christmas and the noise persisted. I assumed it would diminish noise if the friction tween tire and road was decreased? It never made this noise before, and she’s super wishy washy with what I would call important maintenance, so I don’t know if it’s something as simple as low gear oil or a 4wd component wearing?
     
  2. Saltydecimator

    Saltydecimator

    Messages:
    51
    Likes Received:
    5
    Joined:
    Dec 13, 2017
    Location:
    Fort Morgan, CO
    Oh I feel like I hear it coming More from the front than rear, but I can’t be certain... that’s why rear diff being replaced isn’t top on list. It started so after that, so Maybe u joint or something that was disconnected for that procedure?
     
  3. BMThiker

    BMThiker I aim to misbehave Moderator SILVER Star

    Messages:
    8,193
    Media:
    54
    Albums:
    2
    Likes Received:
    6,021
    Joined:
    Sep 19, 2006
    Location:
    Atlanta
    Check the u-joints for certain. Usually you can tell based on the "speed" of the sound whether it's tire noise versus gear or drive shaft noise. While RPMs are the same, the "linear speed" of the wheels is slower than those other smaller parts.
     
  4. alabamatacomaguy

    alabamatacomaguy SILVER Star

    Messages:
    941
    Likes Received:
    670
    Joined:
    Mar 9, 2014
    Location:
    FL Panhandle
    Could move rear tires to front and front to back and see if any changes or what role tires play in it.
    Can stick your finger in rear diff and check fluid level.
    If a dealer did the rear end work I would take to them and say that’s what you think it is and they installed the replacement. Let them diagnose it