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  1. #1
    Veteran Member Three Rings prodrive's Avatar
    Join Date
    Feb 24 2006
    AZ Member #
    10496
    My Garage
    1999 Audi A4 1.8TQ
    Location
    Istanbul,Turkey

    Main cooling fan wiring diagram

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    Hi guys,
    I need the main (large) cooling fan diagram asap.
    I have found the A/C (aux.)cooling fan diagram but it's not working for me.
    Thanks.
    Just A4 ... A4 which we know
    2.0L - HTA35 - Cat3658 -Autronic EMS - Autronic 500R CDI etc..
    ********************-
    Feedback: Clicky

  2. #2
    Veteran Member Three Rings prodrive's Avatar
    Join Date
    Feb 24 2006
    AZ Member #
    10496
    My Garage
    1999 Audi A4 1.8TQ
    Location
    Istanbul,Turkey

    Re: Main cooling fan wiring diagram

    Come on guys anyone ?
    Just A4 ... A4 which we know
    2.0L - HTA35 - Cat3658 -Autronic EMS - Autronic 500R CDI etc..
    ********************-
    Feedback: Clicky

  3. #3
    Account Terminated Four Rings mike-2ptzero's Avatar
    Join Date
    Jul 07 2004
    AZ Member #
    2716
    My Garage
    630AWHP A4, Nissan Titan
    Location
    socal

    Re: Main cooling fan wiring diagram

    The large fan is clutch/rpm controlled. So what diagram or info are you looking for?

  4. #4
    Veteran Member Three Rings prodrive's Avatar
    Join Date
    Feb 24 2006
    AZ Member #
    10496
    My Garage
    1999 Audi A4 1.8TQ
    Location
    Istanbul,Turkey

    Re: Main cooling fan wiring diagram

    I am trying to carry the wiring to my Standalone so I need the wiring of the relay connection if possible or a picture like aux.fan wiring. see below

    BTW didn't you connect the main fan to your 034? I have some overheating issues when I am tuning the low sites while going slow onthe road with a fixed rpm.

    So, than my main fan is not working properly either way becouse you say it's rpm controlled.
    My rpm signal is connected to my standalone :)

    Last edited by prodrive; 09-11-2008 at 10:17 AM.
    Just A4 ... A4 which we know
    2.0L - HTA35 - Cat3658 -Autronic EMS - Autronic 500R CDI etc..
    ********************-
    Feedback: Clicky

  5. #5
    Account Terminated Four Rings mike-2ptzero's Avatar
    Join Date
    Jul 07 2004
    AZ Member #
    2716
    My Garage
    630AWHP A4, Nissan Titan
    Location
    socal

    Re: Main cooling fan wiring diagram

    No I didn't. I run both my electric fans off of a $25 fan controller that uses a probe to measure the coolant temps at the radiator. I also have a switch inside the car that allows me to turn the fans on when I want.


    The main fan gets turned by a belt and a clutch. If you want to control the fan you need to replace the OEM main fan with an electric fan. Nice part is you end up with less drag on the engine when trying to make power.

  6. #6
    Veteran Member Three Rings prodrive's Avatar
    Join Date
    Feb 24 2006
    AZ Member #
    10496
    My Garage
    1999 Audi A4 1.8TQ
    Location
    Istanbul,Turkey

    Re: Main cooling fan wiring diagram

    I am not talking about the fan which is driven by the belt and the clutch.
    I meant the big electric blower attached to the radiator :)
    I want it to be active earlier.
    I think I cannot control the main fan that is attached to the belt.
    Did you have same issues ,why did you change the belt driven fan with electric one ?
    Just A4 ... A4 which we know
    2.0L - HTA35 - Cat3658 -Autronic EMS - Autronic 500R CDI etc..
    ********************-
    Feedback: Clicky

  7. #7
    Account Terminated Four Rings mike-2ptzero's Avatar
    Join Date
    Jul 07 2004
    AZ Member #
    2716
    My Garage
    630AWHP A4, Nissan Titan
    Location
    socal

    Re: Main cooling fan wiring diagram

    Quote Originally Posted by prodrive View Post
    I am not talking about the fan which is driven by the belt and the clutch.
    I meant the big electric blower attached to the radiator :)
    I want it to be active earlier.
    I think I cannot control the main fan that is attached to the belt.
    Did you have same issues ,why did you change the belt driven fan with electric one ?
    Blower attached to the radiator?


    I went changed to the electric fan to decrease any extra drag on the engine and since I only drag race it wasn't like I actually needed the fan coming on during a run and coming on after while the car was sitting still. I actually have my temp controller set to turn the fans on at a slightly higher temp then stock, this way I know the fan wont come on while I am staging the car.

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