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  1. #1
    Gti Jazz Blue's Avatar
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    Coolant Temp Sensor 2.0 TDi BKD

    Hi all,

    Looks like my 2005 A3 may have a faulty coolant temp sensor.

    Anyone changed one before ? Is it similar to the 1.8T in that you can swap it with minimal coolant loss (when the Engine is cold) ?

    Thanks,

    Paul
    2011 (MY12) Skoda Octavia II FL VRS Manual Hatch 2.0Tsi in Race Blue.
    Gone not forgotten -
    2005 Black A3 (8P1) S-Line 2.0TDi DSG. Eibach Pro Springs, Koni FSD shocks and a few bling bits inside.
    Revo 99 GTi Turbo, too much to list mod wise.
    92 Golf Gti Mark 2 16V.

    VCDS HEX-USB+CAN

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  3. #2
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    With the engine cold, release the filler cap to remove any residual pressure in the system and then tighten it back down. Unscrew the old one and stick your thumb over the hole while you pickup the replacement. You'll lose very little coolant.
    A3 2.0TDI Sportback S Line 184 Quattro S-Tronic, Mar. 2014 Glacier white. Electric seats, sunroof, se suspension, heated folding mirrors, Reversing camera, Nappa leather, TPMS, Hold assist, Xenon plus adaptive lights with variable active range control, lane assist, Interior light pack, Technology pack, Comfort pack with ACC, park assist & parking system plus

  4. #3
    Gti Jazz Blue's Avatar
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    Thanks - so basically exactly the same proceedure as swapping it on a 1.8T.

    I take it that it is just held in by a slide clip in the same way. ?

    Paul
    2011 (MY12) Skoda Octavia II FL VRS Manual Hatch 2.0Tsi in Race Blue.
    Gone not forgotten -
    2005 Black A3 (8P1) S-Line 2.0TDi DSG. Eibach Pro Springs, Koni FSD shocks and a few bling bits inside.
    Revo 99 GTi Turbo, too much to list mod wise.
    92 Golf Gti Mark 2 16V.

    VCDS HEX-USB+CAN

  5. #4
    Gti Jazz Blue's Avatar
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    Right it has popped another code so there is obviously a fault. Sebastian at Ross-Tech has said that there are knows issues with the sensors and an optimized part after week 25 2005 (stamped on sensor WW-YY so anything after 25-05).

    Spoke to my local dealer and they have 6 in stock - the downside it is 30 including the O-Ring.

    So of later to pick on up.

    Paul
    2011 (MY12) Skoda Octavia II FL VRS Manual Hatch 2.0Tsi in Race Blue.
    Gone not forgotten -
    2005 Black A3 (8P1) S-Line 2.0TDi DSG. Eibach Pro Springs, Koni FSD shocks and a few bling bits inside.
    Revo 99 GTi Turbo, too much to list mod wise.
    92 Golf Gti Mark 2 16V.

    VCDS HEX-USB+CAN

  6. #5
    Gti Jazz Blue's Avatar
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    Changed it last night - wasn't too bad.

    The top of the airbox and MAF have to be removed, the lovely chap in the factory that fitted the original, also decided it would be a laugh to put the release clip for the loom on the block side. So I ended up taking the sensor out still attached to the loom.

    Of course, as always happens, the O-ring stayed in place. Also you do loose a fair bit of coolant - a lot more than when I change the 1.8T sensor on my Golf. The level in the header dropped about an inch, left a bit of a puddle on my garage floor.

    Cleared the code and did a quick test (as I was out last night) and the code didn't return.

    I will do a longer test tonight and let the temp get up to 90.

    Paul
    2011 (MY12) Skoda Octavia II FL VRS Manual Hatch 2.0Tsi in Race Blue.
    Gone not forgotten -
    2005 Black A3 (8P1) S-Line 2.0TDi DSG. Eibach Pro Springs, Koni FSD shocks and a few bling bits inside.
    Revo 99 GTi Turbo, too much to list mod wise.
    92 Golf Gti Mark 2 16V.

    VCDS HEX-USB+CAN

 

 

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