AH FabricationsChris Nott
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  1. #1
    LPG Abuser & have VAGCOM

    Join Date
    Aug 2005

    Blowing hot or Cold.... HVAC

    My climate control system is either hot or cold set it to 22ish and after a while it just gets hot! I have had a good look at the flap /mix motors and notice that the lower red mechanism (temperature) dosent tend to stay still - then pegs its way to hot, also HVAC off - it's a bit jittery - is this normal ?
    Presuming that this isn't normal operation and the motor / positioning system is past it's best, does the dash need to come out to replace the HVAC assembly?
    I have also notice that the haynes manual says that the HVAC system will need to be se in a reference condition.... anyone herd of this??

    Has anyone experience this fault and cured it??

    The car is starting to move into the Bangernomics part of its life now and need information before I boldly go and pull the car apart big styli

    Please help, I'd like to keep my Audi, my wife is looking at getting a SAAB Aero at the moment - 250bhp and FWD don't mix.....

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  3. #2
    "Stick a V8 in it!"

    Join Date
    Jan 2008
    Glenrothes, Fife, Scotland
    Mine failed in a similar fashion.

    The diagnostic mode on the climate panel has a option called something like "temperature flap error count" and this was all over the place, where as the error counts for the other two flaps were just sitting at 0.

    I got another flap motor from ebay and swapped it over, need to remove the centre console and glovebox to get at it though. Dont need to remove the whole HVAC system though, the motor just unbolts and unplugs.

    2000 A4 1.8T Sport Quattro Avant, Berry Pearl
    2000 A4 1.8T Sport Quattro Saloon, Black-ish
    1997 S4 - PPC £999 Challenge Track Car Build
    TD5 Land Rover Defender build



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