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

S3 temperature gauge misbehaving

Discussion in 'A3/S3 Forum (8L Chassis)' started by its_neil, Mar 31, 2010.

  1. its_neil
    Offline

    its_neil Member

    Joined:
    Mar 1, 2008
    Messages:
    62
    Likes Received:
    1
    [Mar 31, 2010]
    Hey guys,

    had my s3 a week now and noticed the temperature gauge seems to have a mind of it's own. Some trips it won't go above 70, some it will sit at 90 and others it will creep up to 110, trigger the warning then go back and sit at 90.

    Now, this happened on my last car and it turned out to be a cracked block :/ so of course when I saw the needle creep up my heart sank. The car is going into Audi on weds anyway for a cambelt and water pump changed - would it be worth getting the thermostat done too while it's in bits? Should this clear up any issues or am I looking at a knackered block / head gasket? :(

    cheers lads
    #1
  2. Ads

    Ads

    [Oct 22, 2014]

  3. Broken Byzan
    Offline

    Broken Byzan Photographic Moderator Staff Member Moderator VCDS Map User

    Joined:
    Apr 26, 2004
    Messages:
    12,661
    Likes Received:
    293
    [Mar 31, 2010]
    yes to the stat while its in bits, tho i bet your pump is the cause of your current issues
    #2
  4. its_neil
    Offline

    its_neil Member

    Joined:
    Mar 1, 2008
    Messages:
    62
    Likes Received:
    1
    [Mar 31, 2010]
    Cheers, I have to drive ten miles home tonight so I'll keep an eye on it. What are the chances of expensive damage?
    #3
  5. Welly
    Offline

    Welly VX220 SC Driver :)

    Joined:
    Aug 5, 2009
    Messages:
    10,699
    Likes Received:
    119
    [Mar 31, 2010]
    If you have to drive it, then drive it, but keep it to a minimum.

    Watch that temp gauge like a hawk. If she gets to hot, then turn it off and allow to cool before continuing.

    I expect you'll be fine. Try to drive as little as possible until you are happy that the water pump is good. :icon_thumright:
    #4
  6. its_neil
    Offline

    its_neil Member

    Joined:
    Mar 1, 2008
    Messages:
    62
    Likes Received:
    1
    [Apr 1, 2010]
    Home safe now, had to pull over a couple of times but she didn't go over 100 degrees.

    Aside from thermostat or pump, what else could cause this? perhaps a dodgy temp sender?
    #5
  7. golf
    Offline

    golf ***** rent boy VCDS Map User

    Joined:
    Jan 17, 2007
    Messages:
    1,556
    Likes Received:
    1
    [Apr 1, 2010]
    When does it overheat? Sitting in traffic or when moving?

    I've found nearly all overheating issues on the 1.8T to be related to the shitty water pumps VAG insist on fitting. Your thermostat could also be dodgy if your temperature gauge is playing up. It's only a cheap part so get that changed too, and I'm pretty certain your issues will disappear. If it's an issue with the actual block I'll eat my hat.
    #6
  8. Welly
    Offline

    Welly VX220 SC Driver :)

    Joined:
    Aug 5, 2009
    Messages:
    10,699
    Likes Received:
    119
    [Apr 1, 2010]
    ^^^ can I watch? lol.

    I agree though. New water pump. New thermo. Then see what you've got. Don't change the CTS until you've changed the stat if you're spending out money anyway, it might be fine and not need replacing at all!
    #7

Share This Page