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Thread: A6 (C6) heater blowing hot - query re fixing this?

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  1. A6 (C6) heater blowing hot - query re fixing this? 
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    My good o'l A6 (05 reg 3ltr estate) is blowing hot air out of the dash vents near to the doors. I'm guess this is due to one or other of the solenoid valves under the bonnet being stuck or faulty?

    Anyway, I went to lift the 2 covers off to have a look but immediately got coolant leaking out. Is this to be expected or are my valves completely b......., er, due for replacement? I must admit the engine wasn't cold during the 5mins I had a chance to look ...
     
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  2. Re: A6 (C6) heater blowing hot - query re fixing this? 
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    I would do an HVAC scan first but yes it sounds like replacing the valve unit 4F2 959 617 B would be a good idea, they cost 348.25 from Audi.
    Last edited by Crasher; 27-06-2019 at 08:36 PM.
    Dark was that day when Diesel conceived his grim engine that begot you, vile invention, more vicious, more criminal than the camera even, metallic monstrosity, bale and bane of our culture, chief woe of our Commonweal. How dare the Law prohibit hashish and heroin yet license your use, who inflate all weak inferior egos? Their addicts only do harm to their own lives: you poison the lungs of the innocent, your din dithers the peaceful, and on choked roads hundreds must daily die by chance-medley. Nimble technicians, surely you should hang your heads in shame. Your wit works mighty wonders, has landed men on the Moon, replaced brains by computers, and can smithy a "smart" bomb. It is a crying scandal that you cannot take the time or be bothered to build us, what sanity knows we need, an odorless and noiseless staid little electric brougham.

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  3. Re: A6 (C6) heater blowing hot - query re fixing this? 
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    Hi,
    Try to clean them properly.
    yes coolant will leak out.

    clean them and try in the morning, worked for me and i was about to buy fans ...
    Is it blowing just out of the two wents ? or hot all together ??
     
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  4. Re: A6 (C6) heater blowing hot - query re fixing this? 
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    Quote Originally Posted by Mr Zap View Post
    My good o'l A6 (05 reg 3ltr estate) is blowing hot air out of the dash vents near to the doors. I'm guess this is due to one or other of the solenoid valves under the bonnet being stuck or faulty?

    Anyway, I went to lift the 2 covers off to have a look but immediately got coolant leaking out. Is this to be expected or are my valves completely b......., er, due for replacement? I must admit the engine wasn't cold during the 5mins I had a chance to look ...

    yeah mines doing the same thing at the moment ... not good especially this time of the year lol
     
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  5. Re: A6 (C6) heater blowing hot - query re fixing this? 
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    to temp fix while driving - crank the temp up full for a few seconds then bring back down
    Stewart
    2007 A6 quattro 3.0 TDI Manual
    1986 coupe quattro (kv) square wheels.
    1972 mini 1400 100BHP A series
     
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  6. Re: A6 (C6) heater blowing hot - query re fixing this? 
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    Had same issue on mine, i took the solenoids out and cleaned them to get rid of a ll the black marks and I've not had the issue since (about 9 months ago)
     
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