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Thread: 2.5 tdi alternator rattle

  1. #1

    Default 2.5 tdi alternator rattle

    My 2.5, L reg Tdi started rattling a couple of days ago and I located the source as coming from the alternator. Now I am comletely ignorant to the workings of an engine but I noticed the upper belt is significantly slacker than the lower belt, is this the problem? The noise isn't terrible but it is noticable. A plain english reply for a dumbass driver much appreciated.

  2. #2
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    Default Re: 2.5 tdi alternator rattle

    If the belt is slack i reckon the alt is making a noise only because the belt is slipping, with engine running get a bar and push down on the belt tensioner and if noise goes away you need a new tensioner.



    Lynall

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    Default Re: 2.5 tdi alternator rattle

    Ignore that ive just twigged its a 200tdi just adjust the alternator belt first, also look at belt if its very shiny or got small cracks on the inside get a new belt



    Lynall

  4. #4

    Default Re: 2.5 tdi alternator rattle

    Sorry for late reply, just got back from hollybobs. I will scour the site to find info on how to adjust the belt,,yes I am that rubbish!
    Thanks a lot

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