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can anyone identify this noise?

Discussion in 'The Garage' started by bear, Sep 19, 2002.

  1. bear

    bear Registered Member

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    my 83 K5 has a 305 V8.........recently I have noticed a very strange high pitched whining noise when the engine is warm. Anybody got any ideas on what this might be? any help appreciated......this is getting very annoying! /forums/images/icons/tongue.gif
     
  2. bouncytruck

    bouncytruck 1/2 ton status

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    clogged up emissions?
     
  3. SkulzNBonz

    SkulzNBonz 1/2 ton status

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    Maybe your power steering pump.

    John
     
  4. uglychevyZZ4

    uglychevyZZ4 3/4 ton status

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    after being a master tech for many years, im going to make a few common guesses, aside from that, your on your own /forums/images/icons/laugh.gif

    #1 belt--they get looser when warm.

    #2 alt bearing

    #3 p/s pump

    #4 air pump or bearing

    #5 do you have any idler pully's? a/c clutch fryed? clutch fan internals


    you need to poke and prod around, try the old **screwdriver to ear ( the big end for god sakes /forums/images/icons/laugh.gif ) and this may help. if you have to, get a can of something NON_GREASY like carb, or brake cleen, and spray it on one part to the next ( like a bearing surface etc.. ) , one at a time to see if noise go away.also a non greasy spray will help for only a minute , and not stay greasy to slip on belts etc... /forums/images/icons/wink.gif
     
  5. Blazer1970

    Blazer1970 1/2 ton status

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    I would vote for the smog pump. Pull the belts off and turn stuff by hand (alt., smog pump, ps pump), and see if you can tell what is squeaking.
     
  6. bear

    bear Registered Member

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    thanx for the ideas.....I'll check some of that stuff out this weekend...
     
  7. chevyracing

    chevyracing 1/2 ton status

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    If it has A/C check for a pressure leak around the high pressure switch.

    John
     

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