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HELP PLEASE???????

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by lance86blazer, May 23, 2001.

  1. lance86blazer

    lance86blazer Registered Member

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    I have a 1986 k5 blazer that is makeing a clanking noise when i am driving and when i let off the gas a little bit to stay at a steady speed it is the worst but when i let off the gas all the way the noise goes away intell i am almost to a complete stop the noise comes back for about 5sec and stops i have tryed every thing i can think of and i cant figure out what it is does anyone know

    UTAH BLAZER
     
  2. ftn96

    ftn96 1/2 ton status

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    SOunds like loose metal parts vibrating maybe?

    My president is Steve Fox.
    90-350TBI-TCI700-241-33"-10 bolts w/4.10's,
    <A target="_blank" HREF=http://www.nashvillek5.freeservers.com>http://www.nashvillek5.freeservers.com</A>
     
  3. lance86blazer

    lance86blazer Registered Member

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    yeah thats what i thought it was but i have looked and i cant find anything loose

    UTAH BLAZER
     
  4. ftn96

    ftn96 1/2 ton status

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    My first guess is going to be that you may have some exhaust pieces loose somewhere or some bad u-joints.

    My president is Steve Fox.
    90-350TBI-TCI700-241-33"-10 bolts w/4.10's,
    <A target="_blank" HREF=http://www.nashvillek5.freeservers.com>http://www.nashvillek5.freeservers.com</A>
     
  5. 2Dogs

    2Dogs 1/2 ton status Premium Member

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    Try license plate bracket, spar tire bracket, bumper and hitch bolts.
    Have you tried replicating with engine RPM in park? Easier to have someone listen.
    Don't do the Darwin Award thing and crawl under your truck while someone is driving. :)
    I think the exhaust suggestion was the best bet so far.
    Dave
     
  6. FWP

    FWP CRS

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    Yep. Get underneath there with a flashlight if needed, you'll find some metal wear spot somewhere. Just a guess though...........HTH

    <A target="_blank" HREF=http://fwp4x4.coloradok5.com>http://fwp4x4.coloradok5.com</A>
     
  7. gokartergo

    gokartergo 3/4 ton status Staff Member Moderator

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    I'd kinda lean towards the u-joints also......Dan
     
  8. Blue85

    Blue85 Troll Premium Member

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    This sounds just like blown U-joints to me. Check out both of them on the rear driveshaft, especially the rear one.

    <font color=green>"I don't have the brains for business. I want to go into politics" -Mao Xinyu </font color=green>
     
  9. MrsDB

    MrsDB Registered Member

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    It depends where the noise is coming from. Have you tried having someone else drive the k5 down the block... and u listen... that would give a better idea of where to look... other then that... Are you getting a strange vibration in the floor board at all?
     
  10. Pugsley

    Pugsley 1/2 ton status

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    Do you still have that stupid catalytic converter shield underneath the driver's seat? That thing makes a hell of a noise when it gets loose.

    I have voluntarily axed "Pancho" in a bandwidth conservation effort [​IMG]
     
  11. Can Can

    Can Can Pusher Man Staff Member Super Moderator

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    It sure sounds like it's one of your driveshaft u-joints- get under the truck and pull and push on your rear driveshaft. If you get any noticeable movement it's sure to be a bad u-joint. Have you noticed any clicking(like rocks stuck in the tires) while you've been driving lately? That's what you'll hear when a u-joint start to let go. It will eventually graduate to the clanking sound, and then one day will just fall apart...........



    <font color=red>PHOTO ALBUM-</font color=red> <A target="_blank" HREF=http://albums.photopoint.com/j/AlbumList?u=1289798>http://albums.photopoint.com/j/AlbumList?u=1289798</A>.......<font color=blue>TRUCK & HIKING PICS</font color=blue>
     
  12. Emmettology 101

    Emmettology 101 3/4 ton status

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    Are your hubs locked in? It could be a bad u-joint or CV jont in your front shaft.

    <font color=green>MIKE</font color=green>
    <A target="_blank" HREF=http://emmett.coloradok5.com>http://emmett.coloradok5.com</A>
     

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