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  1. #1
    Established Member Two Rings
    Join Date
    Oct 02 2015
    AZ Member #
    359312
    My Garage
    TT Quattro MK1 1.8T, A4 Quattro B6 1.8T, 10th AE MX5 1.8I, 1986 Honda XL250R
    Location
    KY Louisville

    Overheating fans not kicking on?

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    Tried pulling fuse #16 still wont kick on. Can run AC fans but as it's winter that's not the most practical option right? What else can I try? Stays at first mark after center and rose up to the second mark today in stop and go traffic..

  2. #2
    Established Member Two Rings
    Join Date
    Oct 02 2015
    AZ Member #
    359312
    My Garage
    TT Quattro MK1 1.8T, A4 Quattro B6 1.8T, 10th AE MX5 1.8I, 1986 Honda XL250R
    Location
    KY Louisville

    I also start the car cold at the first marker in 55 degree weather.


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  3. #3
    Check the fan fuse in the engine fuse box..make sure it's not burnt ..

    Sent from my LG-H901 using Tapatalk

  4. #4
    Established Member Two Rings
    Join Date
    Oct 02 2015
    AZ Member #
    359312
    My Garage
    TT Quattro MK1 1.8T, A4 Quattro B6 1.8T, 10th AE MX5 1.8I, 1986 Honda XL250R
    Location
    KY Louisville

    Replaced those. Replacing Coolant Temp sensor later, and if that doesn't work then doing a fan control module.

  5. #5
    Established Member Two Rings
    Join Date
    Oct 02 2015
    AZ Member #
    359312
    My Garage
    TT Quattro MK1 1.8T, A4 Quattro B6 1.8T, 10th AE MX5 1.8I, 1986 Honda XL250R
    Location
    KY Louisville

    Update still not fixed. CTS Module fuses and still nothing. I was told the thermostat and water pump were recently replaced. Anyone got anything??


    Sent from my iPhone using Audizine

  6. #6
    If you turn the a.c. on do they work..both fans?..is it low on coolant...?..If the fuse are ok..If the temp reaches 210f and still nothing ...check the fan control module..

    Sent from my LG-H901 using Tapatalk

  7. #7
    Make sure there are no air pockets in cooling system.

    Sent from my LG-H901 using Tapatalk

  8. #8
    Established Member Two Rings
    Join Date
    Oct 02 2015
    AZ Member #
    359312
    My Garage
    TT Quattro MK1 1.8T, A4 Quattro B6 1.8T, 10th AE MX5 1.8I, 1986 Honda XL250R
    Location
    KY Louisville

    Yes. I was told the Thermostat and water pump were recently replace and I went ahead and changed the coolant temp sensor the fuses and the fan control module and next on my list is the fan and motor itself.. Anyone else have any ideas?

  9. #9
    The fans work when the a.c. is on..?...what's the temp your getting using the scanner..when its overheating?

    Sent from my LG-H901 using Tapatalk

  10. #10
    Established Member Two Rings
    Join Date
    Oct 02 2015
    AZ Member #
    359312
    My Garage
    TT Quattro MK1 1.8T, A4 Quattro B6 1.8T, 10th AE MX5 1.8I, 1986 Honda XL250R
    Location
    KY Louisville

    Usually operates around 200. The left fan never comes on, I tried pulling fuse #16 to water pump to override it, it still won't come on. Going to do the fan and a aux fan switch next?

  11. #11
    Established Member Two Rings
    Join Date
    Oct 02 2015
    AZ Member #
    359312
    My Garage
    TT Quattro MK1 1.8T, A4 Quattro B6 1.8T, 10th AE MX5 1.8I, 1986 Honda XL250R
    Location
    KY Louisville

    Tested the switch it seems to be fine assuming that it kicks my AC fan on and not my radiator cooling fan. Did the paper clip trick.. So now I guess I either maybe have a bad motor on the fan and or a possible bad relay switch? Anyone with any knowledge please help...........

  12. #12
    You might need the fan module...

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  13. #13
    Established Member Two Rings
    Join Date
    Oct 02 2015
    AZ Member #
    359312
    My Garage
    TT Quattro MK1 1.8T, A4 Quattro B6 1.8T, 10th AE MX5 1.8I, 1986 Honda XL250R
    Location
    KY Louisville

    Like another? I mentioned I swapped that already.. For a used module, it could have been bad I suppose..

  14. #14
    Well..try to check for voltage at the connector for the fan while the bypassing​ the coolant switch or letting to the car warm up to 210 to 220f..if you get power at the connector..the fan module is good...and the fan is the problem.

    Sent from my LG-H901 using Tapatalk

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