1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

No temperature on gauge (dead sensor)?

jcb Mar 26, 2012

  1. jcb

    jcb Active Member VCDS Map User

    4,132
    13
    38
    If it is dead and has been driven like this is that a problem?
    it seems very hot but the 2nd fan isnt kicking in
     
  2. Bradderz_1988

    Bradderz_1988 Dont replace it, Upgrade it !!

    3,958
    238
    63
    Whats it reading on the hvac ?? Mine displays 30 every now and then when it drops off and also reads 30'c from cold so presuming its the sensor.
     
  3. jcb

    jcb Active Member VCDS Map User

    4,132
    13
    38
    no reading , needle is unmoved
    (by HVAC I assume you mean gauge?)
     
  4. Bradderz_1988

    Bradderz_1988 Dont replace it, Upgrade it !!

    3,958
    238
    63
    No a/c control if you press recirc and the up button for vent distribution then go to 49 then press recirc it will give you the actual temperature in digits.
     
  5. jcb

    jcb Active Member VCDS Map User

    4,132
    13
    38
    they want £33 for a new one!!
    eBay have then for £7. is that a disaster waiting to happen!?
     
  6. aragorn

    aragorn "Stick a V8 in it!" Staff Member Moderator VCDS Map User

    18,437
    845
    113
    yeh i'd stick to genuine, speak to Jason.S on here he'll get you some discount.
     
  7. jcb

    jcb Active Member VCDS Map User

    4,132
    13
    38
    TPS are selling stuff at Audi dealer prices.
     
  8. Bradderz_1988

    Bradderz_1988 Dont replace it, Upgrade it !!

    3,958
    238
    63
    Theres meyle ones on ebay for about £9 iirc
     
  9. jcb

    jcb Active Member VCDS Map User

    4,132
    13
    38
    saw those. and some febi ones.

    TBH I do not want this to turn into a money pit

    if the sensor was goosed why would it run hot?
    I assumed it would run cool if anything as I expected the fan to be on permanently.
    Also done a full scan in VAG and no code for ECT sensor....strange?
     
  10. Bradderz_1988

    Bradderz_1988 Dont replace it, Upgrade it !!

    3,958
    238
    63
    No code here niether aslong as the stat is working and the viscous fan is running id say your ok the electric fan is there as a back up and when the A/C is switched on iirc
     
  11. jcb

    jcb Active Member VCDS Map User

    4,132
    13
    38
    so its not the sensor or it is the sensor but not an issue to run it like that?
     
  12. aragorn

    aragorn "Stick a V8 in it!" Staff Member Moderator VCDS Map User

    18,437
    845
    113
    Sensor for the fan is totally unrelated to the sensor for the dash.

    The CTS on the back of the head supplies a signal for the guage and a signal for the ECU. If this is faulty you'll have **** economy and probably dodgy emissions as it'll run rich all the time.

    The electric fan is controlled by a 4 pin sensor in the bottom radiator hose, and/or the Aircon controller. The viscous fan should run all the time. If you switch the AC on and the electric fan doesnt start then its faulty/broken/unplugged/blown its fuse...

    Is this the TQS your on about, or something else?
     
  13. wallace78

    wallace78 Member

    146
    1
    16
    i didnt get a book with my car how do u put the aircon on iv a funny feeling its not working and were abouts is the sensor in the ingine bay,chees
     
  14. aragorn

    aragorn "Stick a V8 in it!" Staff Member Moderator VCDS Map User

    18,437
    845
    113
    Facelift or Prefacelift?

    Facelift runs the AC all the time unless its below 5c or you press the ECON button.

    Prefacelift has a "frost" symbol on the climate unit to turn on the AC.
     
  15. wallace78

    wallace78 Member

    146
    1
    16
    cheers m8 mines the facelift:icon_thumright:
     
  16. Bradderz_1988

    Bradderz_1988 Dont replace it, Upgrade it !!

    3,958
    238
    63
    Yeah i couldnt sus that one when i got it so i make sure the econ button is lit up all the time.
     
  17. jcb

    jcb Active Member VCDS Map User

    4,132
    13
    38
    A6 2.8Q
    but the A6 forum is like a morgue!

    will check the AC
     

Share This Page