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This sounds BAD!!!!!!

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by MadIrish, Aug 27, 2001.

  1. MadIrish

    MadIrish Registered Member

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    When I am driving, I get to about 10 mph and can hear a sound like popcorn popping in a metal skillit. It only happens when I am rolling and happens when I am both pushing the gas pedal an not. It sounds like snapping-metal creaking- poping all out badness. Seems to be coming from tranny-transfer case.

    I am wondering if my transfer case is out of tranny fluid. I have a leak coming from the back of the transmission. The 'rear seal'?

    I'm gonna try to top off the xcase tonight. Any other ideas? It sounds like I am killing the poor thing.

    I have an 82 K5, stock drivetrain. 350 4bbl and a NP208. Pretty sure it's a 208. Thanks a bunch!

    ps, not sure what tranny, basic K5 though. What will a tranny rebuild set me back?
     
  2. Pugsley

    Pugsley 1/2 ton status

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    Could be a U-joint preparing to shuffle loose of it's mortal coil - there's been a rash of that around here lately[​IMG]. Also check all of your trans/t-case mounting.

    If the shoe fits, get another one just like it
    <a target="_blank" href=http://pugsley.alloffroad.com>pugsley.alloffroad.com</a>
     
  3. MadIrish

    MadIrish Registered Member

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    U-joint. Hmm...... May be time to break out the Chilton. Never changed one before. Could be bad if the front one breaks eh? Turn the driveshaft into a pole vault.
     
  4. LittlePig

    LittlePig 1/2 ton status

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    Rocks in the hubcaps? If you get over 10mph and it goes away, check to see if you got some gravel in the wheels. Once you get the wheels spinning fast enough, the gravel would be held in place by centrifugal force, and stop making noise, but below that it would be slow enough for them to get pulled around by gravity.

    Email: littlepig@keepandbeararms.com
    ICQ: 84108805
     
  5. Pugsley

    Pugsley 1/2 ton status

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    U-joints are pretty easy to change - if they are still the factory joints, you'll most likely have to heat them with a torch to get them out. BTW - Need to get that profile filled out[​IMG]

    If the shoe fits, get another one just like it
    &lt;a target="_blank" href=http://pugsley.alloffroad.com&gt;pugsley.alloffroad.com&lt;/a&gt;<P ID="edit"><FONT class="small">Edited by Pugsley on 08/27/01 03:53 PM.</FONT></P>
     
  6. DuneRunner

    DuneRunner 1/2 ton status

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    MadIrish,
    Check the 4 bolts that bolt your T-case to the trany.
    Mine were loose to the point of almost comming out.
    I also had a bad experience of the Torc Converter(sp?)
    bolts comming loose and it sounded most likely what you have going on with yours.

    Let us know what comes from this,
    KEN

    DANGIT it's not a bronco!
     
  7. MadIrish

    MadIrish Registered Member

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    I'll do that.... tomorow.

    I was just under the truck and took the transfer case top bolt out, and BLA-FREAKIN-AM! A gusher! Does the tranny feed the tcase? I had a jeep and the 208 in it held it's own fluid. If I popped the top bolt on it, nothing would come out. Now I do this on my K5 and it freaking spews!!!!! What is with that?! I had to literaly take a shower in GoJo!

    82 K5 All stock but wheels and tires, 305 4bbl, tranny? NP208
     
  8. SWAMPRNR

    SWAMPRNR 1/2 ton status

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    My 82 HAD a 350auto with a 208case and had its own fluid.
    I did blow some seals once letting fluid from the transmission get into the t-case somehow..that what the shop told me.

    A Big Hammer Can Fix Anything ..
     
  9. MadIrish

    MadIrish Registered Member

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    Im wondering if that is what is going on. Didnt make sense. How much did the work cost you?

    Any ideas what an auto tranny rebuild costs on the average?

    *******82 K5 All stock but wheels and tires, 305 4bbl, tranny? NP208*******
     
  10. Blazer1970

    Blazer1970 1/2 ton status

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    Could be a bad axle bearing in the rear axle. Are you leaking gear oil out an axle tube?

    Tim

    70 Blazer CST 4X4 350 SM465 NP205
    87 Burb 4X4 350
    01 GMC 2500HD 4X4 Duramax/Allison
     
  11. MadIrish

    MadIrish Registered Member

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    I havent looked. Is that the same thing as a breather tube on the diff? Im not sure what an axle tube is. I've only been in this particular truck for a month, before that it was mostly cars and the one 4by (Scout II) I sold before I monkeyed with it. So, any more info on that would be great!

    Ps, is an axle bearing the same as a wheel bearing? I imagine not.

    *******82 K5 All stock but wheels and tires, 305 4bbl, tranny? NP208*******
     
  12. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    There is a seal between the tranny and the T-case...the tranny will continue to over fill the T-case until you re-seal it. Until you can replace that seal watch you tranny fluid level and also the fluid level for the T-case.

    Rene

    <font color=green>Dyslexics of the world...UNTIE!</font color=green>
     
  13. MadIrish

    MadIrish Registered Member

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    Ah so! Will it hurt the tcase to be over filled?

    *******82 K5 All stock but wheels and tires, 305 4bbl, tranny? NP208*******
     

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