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Cooler air at idle

Discussion in 'A4/A4 cabriolet/S4 forum(B6 chassis)' started by vwgtiking, Nov 21, 2013.

  1. vwgtiking

    vwgtiking Active Member

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    When I have the heaters on hi and engine warmed to 90 they blow really hot air which is fine, but soon as I stop in traffic or at lights the heater blows cool air or barely warm. What's causing this?
     
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  3. stu_m

    stu_m Well-Known Member
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    its probably the cold winter air causing it!!

    I'm guessing its a TDI? they run cooler and cool down quicker
     
  4. S4_dan

    S4_dan Fire up the Quattro!
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    Weak thermostat, air in the system, weak water pump, or just generally cold outside.....

    Try placing a piece of cardboard in front of the radiator and see if that makes any difference.....BUT KEEP AN EYE ON YOUR TEMP GAUGE IF YOU DO THIS.
     
  5. vwgtiking

    vwgtiking Active Member

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    It's a 1.8t. Why would cold affect it? Engine hot then hot air? Never had issue with mk4 golf 1.8t.

    How easy is it to change thermostat on these b6s?
     
  6. vwgtiking

    vwgtiking Active Member

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    Water pump done recently.
     

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