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strange squeaking noise from alternator area

Discussion in 'A3/S3/Sportback (8P Chassis)' started by tdi-man, Dec 27, 2010.

  1. tdi-man
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    tdi-man Well-Known Member

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    [Dec 27, 2010]
    im getting a strange noise from the alternator area ....any ideas ???

    i changed the ribbed belt and tensioner 15 months ago.

    :sadlike:
    #1
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  3. Lee_R
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    Lee_R Active Member

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    [Dec 27, 2010]
    Mine was squeeking the other day and i just squirted some WD-40 on the belt, soon stopped it! I assumed it was just the cold weather making it tighter than normal.

    Try that?
    #2
  4. seventhheaven
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    seventhheaven New Member

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    [Dec 27, 2010]
    You are kidding, right?!

    These alternators have a free-wheeling pulley which often ceases and eventually falls apart. With the belt off you need to check if the pulley will spin in one direction without the alternator turning with it - if not it is ceased and will need replacing.
    #3
  5. Eeef
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    Eeef Lord of War

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    [Dec 27, 2010]
    You sprayed lubricant on a rubber belt? :wtf:
    #4
  6. Lewis583
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    Lewis583 Active Member VCDS Map User

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    [Dec 27, 2010]
    As already said, it looks like the free wheeling alternator pulley is knackered. what i would do is take the alternator drive belt off and start the engine, if the noise is gone then it is something driven by that belt. then with the belt off, and engine off, grab the alternator pulley and snatch it in one direction and it should spin (freewheel) and then do it in other direction and it shouldn't freewheel.
    #5
  7. tdi-man
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    tdi-man Well-Known Member

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    [Dec 27, 2010]
    ok many thanks
    #6
  8. circleswim
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    circleswim Lacks Car Funds...

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    [Dec 27, 2010]
    I wouldn't advise spraying the belt with lubricant... It could corrode the belt...
    #7
  9. tdi-man
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    tdi-man Well-Known Member

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    [Jan 11, 2011]
    replaced both pulleys and al is well....
    #8

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