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AAARGH!!!! 2001 S3 temp issues and more!!!

S3 Costs owner life Feb 15, 2011

  1. S3 Costs owner life

    S3 Costs owner life New Member

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    Any thoughts on the following symptoms for a 2001 S3
    • Car struggles up to get to and does not maintain a normal running temperature
    • ECU light on
    • Below average MPG 24ish – careful driving – used to get more
    • The air con does not know what temperate it is, I.E whatever temp I set it at it blows about the same and the air does not get hot.
    Any suggestions as to what will be causing these issues and which I should tackle first?

    Many thanks for the help!!!!!
     
  2. Having been through a similar experience, point 1 will be down to the thermostat, resulting in point 4, and 2 and 3 could be the CTS incorrectly reading the coolant temperature and therefore running slightly rich. Thermostat is about £24 from Audi, the CTS around £8-£9 from any parts retailer.

    Note - I had a "genuine" Audi thermostat fitted by a dealer, didn't resolve the problem. Collected and fitted a "genuine" Audi thermostat myself today, problem resolved. I did the CTS too, purely because I had my tools out and it's only a 5 minute job.
     
  3. beachbuggy

    beachbuggy Well-Known Member

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    Will almost certainly the thermostat.
     
  4. stu_b

    stu_b Member

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    Is there any how to guides on here on replacing the thermostat?
     
  5. s3dave

    s3dave TFSI Hybrid Supporter

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    Last edited: Feb 24, 2011
  6. Sandip

    Sandip Well-Known Member Team Nogaro Blue

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  7. Speedy Steve

    Speedy Steve Active Member

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    yep id agree with stat if you have vagcom you can check the temp while running in that then id go for CTS which is a breeze to change
     

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