EM TuningAH Fabrications
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  1. #1
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    1.9tdi operating temp

    what is the normal running temp of the 1.9tdi ?

    mine very rarely gets above 70 degrees

    always sits at 70 and when stuck in traffic it will rise to just below 90

    ive heard they are supposed to run at 90

    cheers stu

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  3. #2
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    Yup, 90 is right.
    Your thermo stat could be stuck open like my 2.5 one
    Atlas Grey A4 2.5 TDI Quattro Sport.
    Mods so far: Cruise control, DIS, Heated Mirrors, Tuning box, Xenonx, Centre Arm Rest, MFSW, RNS-E, SDS and Aero Wipers.
    To do: None yet.
    Next: Auto dip rearview mirror and Folding Mirrors.

  4. #3
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    thanks for the reply

    cant see it been the stat unless its just sticking a bit as it warms up pretty quickly!!!

    ive had a car with a stat stuck open and it wouldnt get warm at all lol

    what other things is it worth checking ?

    where does it get the temp reading from ? is it the temp sensor that is round the back of the head ?

  5. #4
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    Not sure where the sensor is on the 1.9tdi, I'd like to know this my self as our lasses is well out!
    Atlas Grey A4 2.5 TDI Quattro Sport.
    Mods so far: Cruise control, DIS, Heated Mirrors, Tuning box, Xenonx, Centre Arm Rest, MFSW, RNS-E, SDS and Aero Wipers.
    To do: None yet.
    Next: Auto dip rearview mirror and Folding Mirrors.

  6. #5
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    There's a thread on the CTS (coolant temp. sensor) HERE.
    Ingolstance Read about my A6 HERE.

  7. #6
    scott b's Avatar
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    yep as above, mine runs at 90 all day long

  8. #7
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    thanks for the replies

    i think im going to change the stat and the sensor as they are cheap enough!!

    just a thought could the sensor cause starting issues ? mine will turn over for a fair bit before firing other and sometimes it will fire straight away!!

  9. #8
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    It can do yes, and use more fuel.
    Atlas Grey A4 2.5 TDI Quattro Sport.
    Mods so far: Cruise control, DIS, Heated Mirrors, Tuning box, Xenonx, Centre Arm Rest, MFSW, RNS-E, SDS and Aero Wipers.
    To do: None yet.
    Next: Auto dip rearview mirror and Folding Mirrors.

  10. #9
    paul20v's Avatar
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    Mine was doing this ,
    and i also thought that it wouldnt be the thermostate as it would get to 70 no problems but after changing the ecu temp sensor (which also does the guage ) i changed the thermostate and housing and hey presto upto 90 and stays there whatever happens .

  11. #10
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    Get the genuine audi one, I fitted an after market stat from euro car parts and with normal motor way driving I always get around 75, but when in traffic it does up to 90. I'm going to rip it out next weekend and fit a genuine one.

  12. #11
    paul20v's Avatar
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    Quote Originally Posted by B5NUT View Post
    Get the genuine audi one, I fitted an after market stat from euro car parts and with normal motor way driving I always get around 75, but when in traffic it does up to 90. I'm going to rip it out next weekend and fit a genuine one.
    Genuine all the way , i also fitted the plastic housing as i always do with any plastic water component on any car as they quite often go brittle and leak when not renewed .

 

 

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