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Thread: Where for art thou my coolant leak

  1. #1
    Join Date
    Jul 2011
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    Aust
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    220

    Where for art thou my coolant leak

    Hi,

    Yea yea I know. Been here, done that got the t-shirt.

    Owned 7.5 GTi since new (May 2020). Just had third service. At each service I've mentioned the dropping coolant level. Between services I've definately had to top it up.

    Yesterday I presented the car with the coolant level below minimum (but not set off sensor) with a photo dated the day of the last service 12 months ago where the expansion tank was filled well over max. Advisor gets it, he understands.

    However Post service same result. "We cannot see any leak"

    Where could it be going that they cannot see it? What is my alternative? Any/all suggestions welcome

  2. #2
    Join Date
    May 2012
    Location
    Brisbane, Qld
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    203
    Quote Originally Posted by minke View Post
    Hi,

    Yea yea I know. Been here, done that got the t-shirt.

    Owned 7.5 GTi since new (May 2020). Just had third service. At each service I've mentioned the dropping coolant level. Between services I've definately had to top it up.

    Yesterday I presented the car with the coolant level below minimum (but not set off sensor) with a photo dated the day of the last service 12 months ago where the expansion tank was filled well over max. Advisor gets it, he understands.

    However Post service same result. "We cannot see any leak"

    Where could it be going that they cannot see it? What is my alternative? Any/all suggestions welcome
    I have the opposite problem.
    VW say the thermostat is leaking, yet the coolant level doesn't drop. $1,800 to fix.

  3. #3
    Join Date
    May 2020
    Location
    Canberra
    Posts
    285
    I've been lucky so far, July 2020 delivered GTI and coolant is stable. 3rd service coming up soonish.

    I have heard in my short time in VW land that other people have experienced coolant loss but not a leak,not just seems to go somewhere else.

    Regardless, if it was me and it was going down I would tell them to replace all the relevant parts.
    MY20 MK7.5 Golf GTI - Tornado Red - LP/S&SP
    MY19 AW Polo - Comfortline - DAP

  4. #4
    Have you had it pressure tested by VW and no leak detected? Or have they just done a visual check and canít see a leak?
    There is a big difference.


    Sent from me Where for art thou my coolant leak

  5. #5
    Join Date
    Jul 2011
    Location
    Aust
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    Thread Starter
    Quote Originally Posted by lloydus67 View Post
    Have you had it pressure tested by VW and no leak detected? Or have they just done a visual check and can’t see a leak?
    There is a big difference.


    Sent from me Where for art thou my coolant leak
    Alegedly 20min pressure test. No loss of pressure.

  6. #6
    Join Date
    Aug 2011
    Location
    Mount Colah, New South Wales 2079
    Posts
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    Users Country Flag
    Has anyone any experience of these aftermarket all alloy w-pump/thermostats, currently advertised on Facebook (Sydney)? Priced at $500 or $1000 fitted. Not sure of brand or where they are made - probably China.
    Where for art thou my coolant leak-alloy-w-pump-jpgWhere for art thou my coolant leak-alloy-w-pump-2-jpg

  7. #7
    Join Date
    Jun 2007
    Location
    Sydney
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    1,194
    Quote Originally Posted by minke View Post
    Hi,

    Yea yea I know. Been here, done that got the t-shirt.

    Owned 7.5 GTi since new (May 2020). Just had third service. At each service I've mentioned the dropping coolant level. Between services I've definately had to top it up.

    Yesterday I presented the car with the coolant level below minimum (but not set off sensor) with a photo dated the day of the last service 12 months ago where the expansion tank was filled well over max. Advisor gets it, he understands.

    However Post service same result. "We cannot see any leak"

    Where could it be going that they cannot see it? What is my alternative? Any/all suggestions welcome
    Pretty sure they'll find the leak at the first service after warranty expires!
    06 Jetta 2.0TFSI Killed by a Lexus!
    09 Eos 2.0TSI DSG Loved this car but has now gone to a new home!!
    14 EOS 2.0 TSI has arrived!

  8. #8
    Join Date
    Feb 2011
    Location
    Newcastle
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    5,797
    Users Country Flag

    These are for the Mk6 GTI era (EA888 Gen 2) engines, not the Gen 3 engine in the Mk7 GTI era cars.

    Quote Originally Posted by DonDubber View Post
    Has anyone any experience of these aftermarket all alloy w-pump/thermostats, currently advertised on Facebook (Sydney)? Priced at $500 or $1000 fitted. Not sure of brand or where they are made - probably China.
    Where for art thou my coolant leak-alloy-w-pump-jpgWhere for art thou my coolant leak-alloy-w-pump-2-jpg
    2017 Ford Fiesta ST
    2015 Audi SQ5 bi-turbo V6 TDI family hauler

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