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Weird whiney noise from pulley/belt area

Discussion in 'A3/S3 Forum (8L Chassis)' started by DaveA3, Feb 25, 2010.

  1. DaveA3
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    DaveA3 Audi A-Trizzle!

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    Hi All,

    As above i have a weird whiney noise coming from the pulley/belt area. It seems to get a little louder on acceleration but not alot. Mostly noticed when the car is idleing.

    I've heard the following from everyone ive asked:

    # Belt Tensioner (although mine doesnt jump or move irratically)
    # alternator pulley clutch (my battery charges fine and no alternator light)
    # Water pump (no signs anywhere, changed at 75k with cambelt cars on 101k now)
    # Bearings in pulley (possible)

    Can anyone shed some light on if it could be any of the above or a past experience perhaps?

    I've tried to search but its hard to pin point the issue at the moment so results are vague.

    Many thanks in advance

    Dave :icon_thumright:
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  2. Matt82
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    Matt82 Active Member

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    id say belt tensioner pulley or a guide pulley. cant you get a stethescope on it and listen?
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  3. DaveA3
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    DaveA3 Audi A-Trizzle!

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    not while its running ill rip m ear off lol. I have a video on my phone i can upload later on if u like?

    whats the guide pulley? as i was told that the tensioner pulley would be jerky if it was that which it isnt at the moment.

    p.s who owns a stethoscope that isnt a doctor?
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  4. Matt82
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    Matt82 Active Member

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    me :(

    lol you can get mecahnic stethoscopes. they had a big spike in place of the round pad so you can listen to the noises things are making.

    when i did the belt change on my S4, the guide pullies and tensioner pullies were both cream crackered. i didnt realise how much noise they were making until i started the car again afterwards and could hear the lovely v6 properly!
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  5. MIKE GTR
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    MIKE GTR Member

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    Def sounds like a pulley, don't take any chances get it done as mine has just cost a total of £3k all because it seased
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  6. Matt82
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    Matt82 Active Member

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    eek. the ones i took off the s4 at 115k miles were a mess. like you found out mike, all the little components are important too. i changed everything whilst i had the s4 in bits. gaskets, seals, the tensioners and rollers
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  7. DaveA3
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    DaveA3 Audi A-Trizzle!

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    ok cool cheers lads. u kno how much roughly they cost to change? pulleys and hours of labour?
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