Stuff that blocked the heater core.

Discussion in 'Mk5 VW Jetta, Sportwagen, and Audi A3 TDI forum' started by mikeme, Oct 6, 2014.

  1. mikeme

    mikeme Active Member

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    [​IMG]

    This was flushed out of a heater core on a 2009 TDI Jetta in Houston.
    any idea what this stuff is?
     
    Last edited by a moderator: Nov 9, 2017
  2. chudzikb

    chudzikb Member

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    That is bizarre. Some tech did not like you for some reason and dumped something in your car?
     
  3. mikeme

    mikeme Active Member

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    Not my car. an internet friend with the same car I provided some heater performance comparison. (why he needs heat in Houston, I am not sure, but I guess if it is in the car it should work.) the coolant loop that feeds the heater also cools the EGR, I am pretty sure, so it is good to have it cleaned out even if one did not want heat.
     
  4. chittychittybangbang

    chittychittybangbang Administrator

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    Looks like sand. Doesn't look like rust but you can test it with a magnet.
     
  5. chad ambrosius

    chad ambrosius New Member

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    mine on my 2009 jetta tdi sportwagen (cbea engine) had a very similar substance that I discovered thanks to "no heat." I'm about to do my timing belt change and heater core replacement, so I'm curious what else I'll find.
     
  6. mikeme

    mikeme Active Member

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    2009 JSW TDI 205,000 miles
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    Northern Virginia (dead in dealer parking lot since 15 august 2017)
    You may want to take some time and flush out the system with a water hose.

    a couple adapters will let you push water through the three paths involved to get as much of the granular stuff out as you can.

    [​IMG]
     

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