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Some sort of fan is running

Discussion in 'A3/S3/Sportback (8P Chassis)' started by Jasonchim, Mar 15, 2014.

  1. Jasonchim
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    Jasonchim New Member

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    [Mar 15, 2014]
    Hi everyone

    When I turn my engine off and get out my car. There is some Sort of fan that still runs. It goes off if I start the car up again. Any idea What this could be

    Thanks!!,
    #1
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  3. a6_chris
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    a6_chris Well-Known Member

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    [Mar 15, 2014]
    Is it diesel by any chance? Does it happen all the time?
    #2
  4. articuno88
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    articuno88 New Member

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    [Mar 15, 2014]
    Yeh, if it doesn't happen all the time, most likely the dpf has been regenerating. This has happened twice for me so far. There was also a distinctive smell too iirc.
    #3
  5. wuta3
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    wuta3 Well-Known Member

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    [Mar 15, 2014]
    radiator fan? Mine often runs for 30seconds or so after turning off the engine.
    #4
  6. OVRA3
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    OVRA3 Well-Known Member

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    [Mar 15, 2014]
    Mine used to do that, there are two fans one for aircon and one for rad. One of mine wasn't working so the other was working overtime. Have a look and check that they both work. Mine used to run after the engine switched off but since I got the other working it never happens anymore
    #5
  7. Jasonchim
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    Jasonchim New Member

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    [Mar 15, 2014]
    Hi All,

    Yes my car is a diesel, 2.0 170.

    i've only just noticed that the fan started to run after i turned off the engine..

    never stood and see if the fan stops after 30 secs,

    Think i pay more attention how long next time!!

    thanks
    #6
  8. Westy
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    Westy Double Dark Side! Diesel & 8P

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    [Mar 16, 2014]
    Don't most of the water cooled turbo cars have an after run pump that circulates the coolant round the turbo when you turn off the engine to cool it?
    #7
  9. Jameze
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    Jameze James

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    [Mar 16, 2014]
    It's definitely this.

    OP you'll probably find your engine idles a bit higher than usual too and if you've got the gear suggestion on the DIS it will tell you to drive in a lower gear than usual.
    #8
  10. articuno88
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    articuno88 New Member

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    [Mar 16, 2014]
    Affirmative.
    Whenever I notice the gear change on the DIS being funny I know the dpf is trying to regen. so I try to change my route where it can do so. Once the Start-Stop is working again, I know the process is complete.
    #9

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