Monster MotorsportEM Tuning
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  1. #1
    Reverse Gear

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    Sep 2013
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    12

    Whirring noise when I switch of the engine- any ideas?

    I have an A3 S-line 54 plate
    When i switch off the engine there is a whirring noise like a fan slowing down, doesen't do it al of the time but more often than not
    Any ideas on what it is and should I be worried?

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  3. #2
    Sportback owner

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    Apr 2007
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    France
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    Could it indeed be the fan(s)? I believe that the engine fan runs most of the time, and the aircon fan runs when the aircon is in use. When I switch off my A3, there is the noise of either one fan or both fans spooling down. To check on this, open the bonnet before switching off, and get someone to switch it off while you are looking into the engine compartment. I guess if the engine is not hot enough, then no fans will be running, and thus no noise. So depending on engine temperature and aircon on/off, there will be a difference in the noise when switching off. At least that is what I have observed
    French A3 Sportback 2006, 2.0L 140 TDI, DSG, RSN-E, Ambient lighting, Auto-lights/wipers, Reverse assist, Dolphin Grey, 17" wheels, Leather seats, Cruise control, Roof bars.

 

 

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