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Thread: alternator whine

  1. #1
    Join Date
    Sep 2007
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    alternator whine

    hey guys.. my mk2 sounds like it has a tiny little supercharger on it...

    i'm pretty sure it's the alternator. it's not belts or anything, but i'm sure this is a symptom of something that isn't uncommon.

    alternator whine = ...?

    oh, it's also mk3 ancillaries and pulleys from a 2E, (i've heard of the general issues with mk1/2 alternators, not so much mk3..)
    87' MK2 GTI
    13' MK7 TDI

  2. #2
    Join Date
    Jun 2007
    Location
    Eastern Suburbs Melbourne
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    I have that issue on my mk 1. Seriously sounds like it's supercharged.

    Some people have said that the timing belt is too tight..??


    i like volkswagens
    My blog: http://garagefiftythree.blogspot.com.au/

  3. #3
    Join Date
    Sep 2007
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    Sydney
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    Thread Starter
    that's quite a bad thing... wouldn't that just shyte on the alternator..? maybe i should loosen it... but wait... it cant be.. the mk3 pulleys use that spring loaded tensioner rather than that toothed nut.. so the tension is set by the spring by a factory...

    question. is my alternator going to catch fire and burn my mk2 down any time soon?
    87' MK2 GTI
    13' MK7 TDI

  4. #4
    Join Date
    Jan 2008
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    Melbun
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    Quote Originally Posted by jayjay View Post
    that's quite a bad thing... wouldn't that just shyte on the alternator..? maybe i should loosen it... but wait... it cant be.. the mk3 pulleys use that spring loaded tensioner rather than that toothed nut.. so the tension is set by the spring by a factory...

    question. is my alternator going to catch fire and burn my mk2 down any time soon?
    invest in a fire extinguisher
    2x Caddy, 1x Ducato

  5. #5
    Join Date
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    Quote Originally Posted by Mischa View Post
    invest in a fire extinguisher
    my car is making the exact same noise atm

    Jeez, catching on fire wouldn't be a bad thing though... 11,400 payout. I could buy like, 6 MK2's for that much

  6. #6
    Join Date
    Jun 2008
    Location
    Sydney, NSW, Australia
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    161
    A mate's '97 Seat Cordoba GLX 1.8 made that same noise. It was the alternator bearing. Need to replace alternator and no more noise.

    And no, his car didn't burn down, he sold it with the issue and I saw it driving around over a year later with the noise ALOT louder, but still going...
    2008 Volkswagen Polo 1.9 TDI

  7. #7
    Join Date
    Jun 2005
    Location
    Boronia VIC
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    Jarred, your timing belt IS too tight, alternators sound differerent.

    Jay just pull the alternator out and take it to an autoelectrician . New bearings will cost about $60 to have fitted.

    If you don't fix them, your car won't burn down but eventually the alternator will be beyond repair and will have to be replaced.

    It is possible to replace the bearings yourself if you have all the right tools but the sutosparky is the quick and easy option and you won't have to figure out which bearings to buy and how to pull the alternator apart.

    Pete

  8. #8
    Join Date
    Jul 2005
    Location
    Victoria
    Posts
    998
    as above.....
    will be a bearing on its way out.
    get the bearing replaced before it goes completely and ruins the alternator.
    cheaper to replace the bearing than the alternator.
    1974 1300 Beetle, 1997 Golf GL, 2003 New Beetle Cabrio, 2014 Audi A4 quattro

  9. #9
    Join Date
    Oct 2005
    Location
    Dandenong North, Vic
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    I may have read all the above wrong, but any way, isnt your timing belt your cam belt and every other belt running off the main crank pulley just aux V-belts or ribbed ?

    The whine could just be the power steering pump if you have one ?
    I had my cam belt a bit too tight and there was an ugly groan on idle.
    MK2 GTI G60

  10. #10
    Join Date
    Jul 2005
    Location
    Victoria
    Posts
    998

    not sure of the specific engine set up but it may only be one belt driving the whole lot.

    timing belt usually internally driven.
    alternator, water pump (mechanical) and other bits driven from front pulley on engine
    1974 1300 Beetle, 1997 Golf GL, 2003 New Beetle Cabrio, 2014 Audi A4 quattro

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