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1G AWD rear wheel bearing noise???

Posted by tk106, Oct 19, 2019

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  1. tk106

    tk106 Supporting Member

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    So I've had this grinding/whirring type noise on decel since I purchased the car two years ago. It's only on decel in gear and when I press the clutch in or pull it out of gear, the noise goes away. I've rebuilt the driveshaft, there was no metal out of the norm when I drained the trans, tcase and rear diff. It's definitely speed related. It does have a stage 3 shep trans with welded diff. Almost certain it's coming from the rear and it has gotten progressively worse. Before it would only be at 60ish mph, and now it's also at 30-40mph. I'm suspecting it's the rear wheel bearings. What are your thoughts? I'm going to check what happens when I'm turning to see if the noise changes. There's no side to side or top and bottom play in any wheels.

    Thanks
    Tony
     
    Last edited: Oct 19, 2019

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  2. tk106

    tk106 Supporting Member

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    Also, do you have to replace the seals? I watch joe wrenches video and it doesn't seem like he replaced any seals.

     

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    2000 Jeep Cherokee Sport - Classic
    awd · automatic · Misc Vehicles

    145  4

    93 Civic 4 Door -sold-
    fwd · manual · Misc Vehicles

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    1992 Eagle Talon TSi AWD
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  3. Vegas smith

    Vegas smith Proven Member

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    Sounds like the rear diff may need a rebuild.
     

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  4. tk106

    tk106 Supporting Member

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    That’s what I originally thought so I replaced it. Same thing.
     

    142  3

    2000 Jeep Cherokee Sport - Classic
    awd · automatic · Misc Vehicles

    145  4

    93 Civic 4 Door -sold-
    fwd · manual · Misc Vehicles

    Street Build 2K  6

    1992 Eagle Talon TSi AWD
    12.625 @ 111.42 · 1G DSM
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  5. BOOMBOOMGSX

    BOOMBOOMGSX Probationary Member

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    Hey Tony, if it was a rear wheel baring it would be consistent through out acceleration and deceleration. Also if you were to sway the car from left to right at higher speeds (ie:40-50mph+) the baring noise would change pitch very distinctively. sounds like a pinion gear baring in the differential is damaged and causing this issue.
     

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  6. tk106

    tk106 Supporting Member

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    Hey Joe. Thanks for the input. I changed the rear diff and it’s hard to image both diffs would create the same noise.

    I’m sure the rear bearings are originally and they’re not difficult to replace and they’re fairly inexpensive. So I’m gonna change them sometime this winter and report back.

    Thanks fellas!!
     

    142  3

    2000 Jeep Cherokee Sport - Classic
    awd · automatic · Misc Vehicles

    145  4

    93 Civic 4 Door -sold-
    fwd · manual · Misc Vehicles

    Street Build 2K  6

    1992 Eagle Talon TSi AWD
    12.625 @ 111.42 · 1G DSM
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  7. BOOMBOOMGSX

    BOOMBOOMGSX Probationary Member

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    Word so you swapped diffs nice. how old are the cv shafts, id check those too?
    and you said you rebuilt you drive shaft right>? where did you go for carrier bearings and u-joints and how much did it run you?
     

    Street Build 155  1

    1990 Mitsubishi Eclipse GSX
    awd · manual · 1G DSM
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  8. tk106

    tk106 Supporting Member

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    Carrier bearings from extreme psi and all the rest from amayama. All oem. Total was $420 I think
     

    142  3

    2000 Jeep Cherokee Sport - Classic
    awd · automatic · Misc Vehicles

    145  4

    93 Civic 4 Door -sold-
    fwd · manual · Misc Vehicles

    Street Build 2K  6

    1992 Eagle Talon TSi AWD
    12.625 @ 111.42 · 1G DSM
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  9. BOOMBOOMGSX

    BOOMBOOMGSX Probationary Member

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    Thats awesome! ive been searching Amazon and Rockauto for parts and couldnt find OEM. Thats a great price for all of it. new propeller shafts are running over $1,000 - $1400. thanks for the info dude.
     
    Last edited: Oct 20, 2019

    Street Build 155  1

    1990 Mitsubishi Eclipse GSX
    awd · manual · 1G DSM
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  10. tk106

    tk106 Supporting Member

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    It takes a few weeks to ship since it comes from Japan. Also order the full yoke kit since it’s cheaper.
     

    142  3

    2000 Jeep Cherokee Sport - Classic
    awd · automatic · Misc Vehicles

    145  4

    93 Civic 4 Door -sold-
    fwd · manual · Misc Vehicles

    Street Build 2K  6

    1992 Eagle Talon TSi AWD
    12.625 @ 111.42 · 1G DSM
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