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scraping coming from rear end.

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by 90K5, Mar 28, 2001.

  1. 90K5

    90K5 1/2 ton status

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    when I'm driving at slow speeds with the window down i can hear a scraping noise coming from the area around my rear drivers side wheel. I have no idea what it is, sounds just like a zip tie on a driveshaft does, but I've looked around in there and everything looks fine. The sound is proportional to how fast I"m going, but can't hear it at higher speeds because of my exhaust and traffic. Any ideas?

    90K5

    See my truck at <A target="_blank" HREF=http://albums.photopoint.com/j/Albumindex?u=1329584&a=9886502>http://albums.photopoint.com/j/Albumindex?u=1329584&a=9886502</A>
     
  2. ftn96

    ftn96 1/2 ton status

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    Pull your rear axles out adn see if you have anything wrapped around it. MAybe its "scraping" the inside of the hub where the brakes and such are. Or maybe it could be a bearing.
    Try jacking it up on jack stands and have someone in the cab while you investigate.

    Will work for beer, parts and tools.
    90 Jimmy 350TBI-700R4-241-33" BFGs-10 bolts w/4.10's
    <A target="_blank" HREF=http://www.nashvillek5.freeservers.com>http://www.nashvillek5.freeservers.com</A>
     
  3. RESTORE89

    RESTORE89 1/2 ton status

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    possible to be a dragging brake shoe, or part there of
    chris
     
  4. ChevyCaGal

    ChevyCaGal 3/4 ton status

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    Check your brakes and see if it's them- possibly something caught up in there rubbing on the moving parts when you drive (Mine do that when lots of dirt gets up in them- sounds horrible). Maybe part of the brake is loose and rubbing? I'd also check the bearings. See if something is caught around the axle somewhere making the noise too.......

    "I love the sound rice burners make when ya run over them"
     
  5. MudFrog

    MudFrog 1/2 ton status

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    Mine did this for a while, then it got louder, and Louder, and LOUDER. Next thing I know my rear end blows up, and it was missing 8 teeth. Might wanna pull your diff cover and take a look around.

    89 K5 Silverado
    <A target="_blank" HREF=http://mudfrog.coloradok5.com>http://mudfrog.coloradok5.com</A>
     
  6. FWP

    FWP CRS

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    Keep your foot on the gas, and lightly apply brakes. Sound go away? If so, probably brake related- the gears and driveline woud still be on the drive side that way. Also, is the sound faster than the wheel speed or the same? Remember the driveshaft, ujoints are rotating 3-5 times faster than the wheels.

    [​IMG]
     
  7. 87 mid canada k5

    87 mid canada k5 1/2 ton status

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    try www.ring-pinion.com they've got a diagnostic noise chart that might interest you. I'd leave you a live link, but I haven't figured that one out yet!

    Denis
     
  8. fr8train

    fr8train 1/2 ton status

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  9. BillyBob

    BillyBob 1/2 ton status

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    I think I have something like that going on in my 87. But mine is more of a rubing, it isn't scraping yet. I feel it's my rear brakes, since the sound only occurs when the brake is pressed, and near a complete stop. My pedal really has to go down for me to get some stopping power, so I think the rear brakes aren't doing their job. I'm hoping to take a look at the drums sometime soon.

    <A target="_blank" HREF=http://billybob.coloradok5.com>http://billybob.coloradok5.com</A>
    If it ain't leaking oil, it ain't my truck![​IMG]
     
  10. Pookster

    Pookster 1/2 ton status

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    Same stuff started happening to me. The rear brakes started to fade, so I got a lot of nose diving when I jammed on the brakes. However, when I jam on the E-brake, the rear will lock up. Sounds like a bad shoe to me or something... I just parked the K5, will take a look at it later today or tomorrow. what a way to spend a vacation!
     

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