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Altenator belt tensioner jumping up and down.

Discussion in 'A3/S3 Forum (8L Chassis)' started by doublem_1, Jan 31, 2012.

  1. doublem_1
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    doublem_1 Member

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    [Jan 31, 2012]
    In regards to my last thread on here I replaced the alternator pulley as it was stiff and was making some horrible noises. This is now fixed thanksfully :). However the belt tensioner still jumps up and down a little when the engine is running.

    Is this a major problem? Will a new one fix the problem?
    #1
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  3. oilyaudi
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    oilyaudi New Member

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    [Jan 31, 2012]
    Hi, I had a similar problem on my Tdi 130, problem seemed worse at idle. Replacing the tensioner pulley fixed the problem hth
    #2
  4. doublem_1
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    doublem_1 Member

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    [Jan 31, 2012]
    Apart from jumping around, was there any other problems with it? I bought a new tensioner in case the alternator pulley was ok but don't know wether or not to put it on or return it.
    #3
  5. Welly
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    Welly VX220 SC Driver :)

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    [Feb 1, 2012]
    A bit of movement is normal, the belt will be stronger and weaker at points and will require more and less tension. Not unusual at all.
    #4

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