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Engine fan is constantly on. Help please!

Discussion in 'A4/A4 cabriolet/S4 forum(B6 chassis)' started by vipergrm, Aug 24, 2011.

  1. vipergrm
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    vipergrm New Member

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    [Aug 24, 2011]
    Hi guys,

    There seems to be an issue with my Audi (A4 Avant Sport 1.9 TDI 130 2002) whereby the engine fan is ALWAYS on. Even when I first start the car in the morning the fan comes on immediately. Also, if I turn the key to the on position without starting the engine the fan also starts and stays on throughout the journey until I literally switch off the ignition. The temp gauge is working fine. I'm guessing there's a sensor or something that is giving incorrect feedback regarding engine temperature. Any ideas what might be wrong? I hope I have explained this alright!

    Thanks in advance for any assistance/ideas :)
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  3. quattrojames
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    quattrojames Moderator Staff Member Moderator

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  4. vipergrm
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    vipergrm New Member

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    [Aug 24, 2011]
    #3
  5. quattrojames
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    quattrojames Moderator Staff Member Moderator

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    [Aug 24, 2011]
    There's two fans iirc. The viscous fan is temp dependant and the electric fan runs with the air con. I think thats the case, maybe someone can confirm.

    Try GFS or TPS (Trade Parts Specialists) for prices.
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  6. vipergrm
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    vipergrm New Member

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    [Aug 24, 2011]
    Thanks for that. Ill check out those Trade specialists!
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  7. vipergrm
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    vipergrm New Member

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    [Oct 3, 2011]
    Hi guys,

    I've got the replacement ECT (Electronic Coolant Temperatue) sensor however, I cannot find the ECT! I've read some guides with pics attached but I still cannot find the actual ECT anywhere in the engine compartment. Any ideas where this is located in an Audi A4 Avant 1.9 TDI Sport (B6)? Thanks!
    #6
  8. scottshere
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    scottshere Member

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    [Oct 5, 2011]
    Its right at the back of the engine near the bulkhead.
    Right pain to get to and has a plastic clip holding it in.
    Look down from the drivers side and you should see a dark green plug.

    Its a good idea to have the new one handy, so as not to loose all the water.
    #7

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