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Thread: Cabin temperature issues

  1. #11
    Join Date
    Aug 2012
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    Alton, Hampshire, United Kingdom
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    459
    Hi,

    the temperature flap motor is probably the easiest one to replace. Only the glove box has to be removed for access. An endoscope camera is required to re-align the gears afterwards though as they can't be seen directly. A small mirror and light on a stick might work as well.
    http://www.a2oc.net/forum/showthread...er-flap-motors

    More info:
    http://www.a2oc.net/forum/showthread...2-climate-unit

    The only thing that could need replacing where the official Audi procedure requires the dash to be removed is the G263 Evaporator outlet temperature sender. This isn't easy to get to on RHD cars (although is very easy on LHD).
    However, it is possible to replace from below with minimal dismantling:
    http://www.a2oc.net/forum/showthread...oving-the-dash

    A scan of faults on the climate control unit will report what's wrong. The motors can suffer with electrical contact issues with the wiring inside the plastic casing. This often is intermittent with vibration which means that the motor can work fine when the car is stationary but develop a fault when the car is being driven. The control unit will disable the motor when it detects a fault although this is reset when turned off. This often means that the motor moves the flap into the initial position when the ignition is turned on but is then disabled once the car is being driven. If the weather is cool, given the thermostatic heat control, this can mean that the flap is moved to the full heat position and then stays there.
    I haven't tried to break one apart and see if it can be fixed yet so the only solution at the moment is to buy a new one if faulty.

    regards

    Andrew

  2. 2 users that liked this post:

    cheechy (20-06-2017), Special edition (19-06-2017)

  3. #12
    Join Date
    Jun 2017
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    Kelty Fife
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    Great info. I'd probably want to get hold of one now as it's annoying. I've found in my case that the temperature send to stay stable unless you turn it down to much and then the cabin temperature starts to rise. It's like it can't cope.

    Is there more than one type of v68 flap motor and if so what do I need for a 2004 1.4tdi 90?

    Do I have more than one option I think is the question?
    Last edited by cheechy; 20-06-2017 at 10:14 AM.

  4. #13
    Join Date
    Aug 2012
    Location
    Alton, Hampshire, United Kingdom
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    459
    Quote Originally Posted by cheechy View Post
    Great info. I'd probably want to get hold of one now as it's annoying. I've found in my case that the temperature send to stay stable unless you turn it down to much and then the cabin temperature starts to rise. It's like it can't cope.

    Is there more than one type of v68 flap motor and if so what do I need for a 2004 1.4tdi 90?

    Do I have more than one option I think is the question?
    Hi,

    yes, there are two types and they aren't interchangeable as the mounting and electrical plug are different.

    If your car is a 2004 then you probably have the later type. The changeover was on VIN 8Z-4-018 625.
    The later type part number for the temperature motor is 6Q0 907 511 C. That part however isn't available any more new from Audi.
    When I replaced the temperature motor in the thread quoted earlier, there was an alternative more generic part 6R0 907 511 available instead.
    This generic part lacks the alignment aid "key" in the gear teeth.
    I sourced the original like for like part as old unused stock from eBay.
    Its also worth mentioning that the "6Q0" part is a VW Polo part originally.

    regards

    Andrew

  5. 2 users that liked this post:

    cheechy (20-06-2017), Special edition (20-06-2017)

  6. #14
    Join Date
    Jun 2017
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    Kelty Fife
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    392
    So progress on this this far. AC compressor was definitely gone so was replaced. Car was then regassed.

    I now get cool air still wouldn't say super cold but not really sure whether this is the norm in the A2. In my TT MK3 for instance or the wife's V40 those guys get much cooler.

    The temp control flap still needs replaced as it's not playing ball either. However concerned that the air con isn't as cool as it should be in my opinion. The thermostat had been changed so what's left?

    Sensor?

    Or do I just replace the whole car?
    Last edited by cheechy; 22-08-2017 at 06:58 PM.

  7. #15
    Join Date
    Jan 2014
    Location
    Wakefield, Yorkshire.
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    2,890
    I would hope that a re gas would involve a "leak" test. Ive heard that a green dye is introduced into the system to highlight any escaping gases around the various pipe connections.
    Cherry Red Tdi 90

  8. #16
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    Jun 2017
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    Quote Originally Posted by Special edition View Post
    I would hope that a re gas would involve a "leak" test. Ive heard that a green dye is introduced into the system to highlight any escaping gases around the various pipe connections.
    Yes and Tbh now had it regassed twice if I'm honest. Once before I got the AC compressor fine and once after. Before highlighted no leaks but a dead AC compressor.

    Don't think they are allowed legally now to regass knowing there is a leak.
    Last edited by cheechy; 22-08-2017 at 09:35 PM.

  9. #17
    Join Date
    Aug 2015
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    St Annes on the Sea
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    G263 sensor (from memory), if this fails then the Aircon works in a kind of limp mode, cool but not cold
    the sensor is located in the heater box in the middle of the car, official way to replace sensor is dash out, but there is a guide on here somewhere about doing it from the drivers side near the clutch pedal, but it is very tight for space
    VAGCOM would likely show the G263 sensor as intermittent or implausible

    cheers
    Last edited by depronman; 22-08-2017 at 10:31 PM. Reason: G263 (not G273)
    Paul (Depronman)
    1.4 TDI 2001 287,347 miles and still going strong

  10. Users that liked this post:

    cheechy (22-08-2017)

  11. #18
    Join Date
    Aug 2007
    Location
    East Sussex
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    1,370
    Quote Originally Posted by depronman View Post
    VAGCOM would likely show the G273 sensor as intermittent or implausible
    Yes, it will. A scan with VCDS is essential. Ignore the intermittent only errors. The most likely source of a leak is the condenser, but might be just a failed O-ring. If the dryer is original, that should be replaced.

    RAB
    2013 E-Up! Dark Blue (Wifey's new car!)
    2001 A2 1.2Tdi Silver, bought in 2007
    2001 Lupo 3L Red, bought new, the first registered in the UK
    1999 Lupo 3L Silver (Wifey's car)
    1946 MG TC owned since 1971 (my first car!)



  12. Users that liked this post:

    cheechy (22-08-2017)

  13. #19
    Join Date
    Jun 2017
    Location
    Kelty Fife
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    Yup think it's g263 sensor and I've already found a couple of good looking write ups in the archive.

    The whole air con thing is doing my head in didn't realise how broken it was before I bought the car!

  14. #20
    Join Date
    Sep 2002
    Location
    Richmond North Yorkshire
    Posts
    7,919
    If you have not spotted it, this is the 'quick' way Paul referred to - http://www.a2oc.net/forum/showthread...375#post259375


    Cheers Spike

  15. Users that liked this post:

    cheechy (22-08-2017)

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