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SEAT Exeo Tdi cooling problems

Neville Ramsbottom Sep 30, 2019

  1. Neville Ramsbottom

    Neville Ramsbottom New Member

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    Hi.
    Newbie here. I have a SEAT Exeo Tdi with a CAGA engine which has cooling problems. I have changed the main thermostat, the inline thermostat and the inline one way valve but still the coolant temp drops when outside temp goes below 8 deg when at a standstill. Its ok when going along. Is there something I have missed???
    Thanks
     
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  3. The Jargen

    The Jargen Member

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    So to get this correct you've replaced the main thermostat and the egr cooler thermostat so far? Did you use genuine parts?
     
  4. Neville Ramsbottom

    Neville Ramsbottom New Member

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    Hi.
    I used BEHR MAHLE parts.
     
  5. The Jargen

    The Jargen Member

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    The issue is undoubtedly the thermostats. If BEHR MAHLE are not the original supplier for the parts change them again.

    As a side note do you have a manual or multitronic? I know some of the dsgs have a third thermostat connected to the transmission cooler, yours may be the same.
     
  6. Neville Ramsbottom

    Neville Ramsbottom New Member

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    Hi
    Mines just a manual with main thermostat, DPF thermostat and a one way valve.
    Could there be a problem with the flow in the DPF???
     
  7. The Jargen

    The Jargen Member

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    There isn't a DPF thermostat, it's air cooled not water cooled. There is a egr thermostat though and it seems like you haven't replaced it. That will be your next step.
     
  8. Neville Ramsbottom

    Neville Ramsbottom New Member

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    Hi,
    As I said at the start of this post I have already replaced the main 3 branch manifold thermostat, the small inline thermostat at the back of the engine and the one way valve. All OEM parts. Engine still losing temperature when at a standstill and outside temp is less than 8 degrees but rises again when moving.
    Did it this morning on way to work. outside temp 5.5 degrees. Engine temp dropped to 70 degrees when at a standstill.
     

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