Dismiss Notice



Register Today It's free! This box will disappear once registered!

Just replaced rear diff and still have noise

Discussion in 'Stock 2002 - 2005 Explorers' started by sjorda1, July 6, 2011.

  • Searches ExplorerForum.com
    1. sjorda1

      sjorda1 New Member

      Joined:
      May 24, 2011
      Messages:
      12
      Likes Received:
      0
      Trophy Points:
      0
      I have a 2002 Explorer and when I bought the truck last year the previous owner stated he replaced the hub bearings. I can not verify the bearings were replaced for certain. There is a roaring sound coming from the rear end that sounds like I have super swampers on the back. I deducted I had a bad rear diff. I purchased a rebuilt limited slip 3.55 rear diff off ebay from automotive parts unlimited.

      There used to be a poster here that advertised their rear diffs. Anyway, I installed the rear diff and the noise is the same; much to my chagrin. When I am driving, I hear the sound at all speeds, regardless if I have my foot on the gas or not. When I turn the wheel to the right, the noise stops, when I turn the wheel to the left, the noise persists. I assume what I really have is a bad hub bearing.

      Based on my symptoms, which side is the noise coming from? I assume when I turn the wheel to the right it shifts the weight of the vehicle to the left, which causes the noise to subside. Conversely, when I turn the wheel to the left, it shifts the weight to the right to the suspected bad side, which will not cause the noise to subside. In other words, I suspect I have a bad right rear hub bearing. What do you guys think? I just spent $900 on a rear end and the problem is still occurring. I am a little pissed off and do not want to do anymore needless repairs. Thanks for any tips.
       
    2. Support EF

      Join the Elite Explorers for $20

      Explorer Forum has probably saved you that much already, and will continue to save you money as you learn how to diagnose fix problems yourself and learn which modifications work without having to experiment on your own. Elite Explorer members see practically no ads, can add their own profile photo, upload photo attachments in all forums, and Media Gallery, create more private Conversations, and more. Join Today. Your support is greatly appreciated.


      to hide adverts.
    3. shooterdude199

      shooterdude199 Active Member

      Joined:
      May 28, 2009
      Messages:
      881
      Likes Received:
      0
      Trophy Points:
      0
      City, State:
      Irmo, South Carolina
      Year, Model & Trim Level:
      01 Sport Trac
    4. akdoggie

      akdoggie New Member

      Joined:
      June 17, 2011
      Messages:
      9
      Likes Received:
      0
      Trophy Points:
      0
      City, State:
      Anchorage, Alaska
      Year, Model & Trim Level:
      02 XLS
      You got it right. It definitely sounds like a wheel bearing. When you load the bearing the sound still stays the same, and when you relieve the bearing the noise is lessened. Time for a new right side bearing.

      You can go between two buildings with windows down and hear the noise usually. I use an alleyway behind a hotel to listen to sounds coming from the rear areas. It works fairly well. lol
       
    5. Jaxjoradam

      Jaxjoradam New Member

      Joined:
      July 8, 2011
      Messages:
      2
      Likes Received:
      0
      Trophy Points:
      0
      City, State:
      Queens, NY
      Year, Model & Trim Level:
      2002 XLT
      If you drive serpentine down the street you will here the noise come and go...Then it's the wheel bearing. You always replace them in pairs. Failure to replace them can ruin your transmission...
       
    6. imp

      imp Elite Explorer

      Joined:
      November 12, 2009
      Messages:
      4,042
      Likes Received:
      334
      Trophy Points:
      103
      Location:
      West-Central AZ along the Colorado River
      Year, Model & Trim Level:
      59 Ranchero F250 D'Line
      Check Wheel Bearings

      Place jack stands under all 4 wheels under suspension, as close to the tire as possible. Or, remove the wheels (better yet, more work), run up a couple of lug nuts against the rotors snugly, have someone gently run the speed up to about 30 or so in drive, while you listen carefully at all 4 hubs- you can carefully use a long screwdriver as a "stethoscope", placing the blade near the hub on the suspension, and the handle end tightly against your little ear-flap thingy. If 4X4, not AWD, press "4X4 HI". AWD will turn 'em all automatically.

      If your noise is really loud, you may not need the screwdriver. Still, placing it under the pinion area of the differential can prove out presence or lack of pinion bearing noise. This work must be done CAREFULLY and with CAUTION, but is not beyond the ability of most fairly mechanical persons. Be careful around rotating parts! I proved-out a bad rear wheel bearing this way, which none of us could positively isolate while driving in the vehicle, 2004 Explorer, not even as to front or rear! imp
       
    7. JCR

      JCR Active Member

      Joined:
      March 13, 2006
      Messages:
      116
      Likes Received:
      0
      Trophy Points:
      0
      City, State:
      Lancaster, Pennsylvania
      Year, Model & Trim Level:
      2002 XLS
      Where are you and what are you doing with the rear you removed? Is it also a limited slip 3.55?
       
    8. vinceautopart

      vinceautopart New Member

      Joined:
      April 1, 2011
      Messages:
      2
      Likes Received:
      0
      Trophy Points:
      0
      City, State:
      New Jersey
      Year, Model & Trim Level:
      1998 XLT
      We at Automotive Parts Unlimited are still selling complete 8.8 and parts for the Explorers. I don't know what happened to the advertisement but you can go to our website automotivepartsunlimited.com or call 800-270-5224 and ask for Vince
       
    9. Who taught you that load of crap? Wheel bearings have no effect on transmissions.:ca:
       
    10. HCCA 250

      HCCA 250 Active Member

      Joined:
      November 7, 2009
      Messages:
      134
      Likes Received:
      0
      Trophy Points:
      16
      City, State:
      IL
      Year, Model & Trim Level:
      2002 Eddie Bauer
      Ditto...And,you need not replace wheel bearings in "pairs". A wheel bearing is good, or it is not. And, they can go at any time. Which means, you can get 100K out of tem, or 10K. Or, anywhere in between. Just because you replace them, at the same time dowsn't mean they will stay good for the same length of time. And, they are a PITA to R & R. One at a time costs enough!
       
    11. vinceautopart

      vinceautopart New Member

      Joined:
      April 1, 2011
      Messages:
      2
      Likes Received:
      0
      Trophy Points:
      0
      City, State:
      New Jersey
      Year, Model & Trim Level:
      1998 XLT
      hub noise

      sounds like it may be the hub bearing. yes, you're correct usually it is the opposite side of the turn because you are putting the weight on that side. so if you turn right and you have the noise then it will usually be the left bearing. also when you put the truck in the air and spin the wheels you should be able to hear something or feel some kind of resistance.
       
    12. tmaher

      tmaher Member

      Joined:
      September 15, 2008
      Messages:
      67
      Likes Received:
      0
      Trophy Points:
      0
      City, State:
      wakefield RI
      Year, Model & Trim Level:
      2003 xlt 4wd
      i replaced one passenger rear bearing because the noise was unbearable. 737 engine whine comes to mind... Noise reduced 80%. it was such a PITA that i have not done the driver side. Took the shop 2 hours to get the old bearing out. Had to torch it. The side to side driving definitely pinpoints the offending bearing. I can live with it the way it is. uhhhhh. my wife can live with it the way it is. LOL. gonna buy her a new car this fall anyway.
       

    Share This Page







    We Support Our Troops!