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A6 2.5 tdi avant Quattro c5 water temp

Discussion in 'A6/S6/Allroad forum (C5 Chassis)' started by Keggers, Nov 25, 2012.

  1. Keggers
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    Keggers Member

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    [Nov 25, 2012]
    The temperature gauge for my engine coolant has mostly stopped working then all of a sudden it starts to work again!! The car heater system is working normally when the gauge hasn't moved a smidge! Is there a sensor that might be at fault or is it a bigger job? Any advice appreciated, thanks
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  3. mrnice
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    mrnice Member

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    [Nov 25, 2012]
    Temp guage sensor perhaps?, vcds scan might give a clue
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  4. Keggers
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    Keggers Member

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    [Nov 26, 2012]
    Can anyone advise me of the location of the sensor for the coolant?
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  5. mrnice
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    mrnice Member

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    [Nov 26, 2012]
    Sorry wish I could but mines a 4-pot, hopefully a 2.5 owner will be along soon
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  6. adamss24
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    adamss24 Well-Known Member

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    [Nov 26, 2012]
    Take the engine cover off and look to the left of the injector pump- it's the sensor plugged in the black coolant pipe. Replace the seal with the new sensor and be careful with the plastic retaining clip- they do snap !
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  7. Keggers
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    Keggers Member

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    [Nov 26, 2012]

    thanks adamss24, i'll look tomorow when i have some light, is it an expensive part and where would i be best to get the required sensor and seal? thanks again.
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  8. adamss24
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    adamss24 Well-Known Member

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    [Nov 26, 2012]
    I would get one from dealer, the cheap ones don't last !
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