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Thread: A/C to C/C

  1. #1
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    Question A/C to C/C

    Anyone know if it would be feasible to upgrade a standard aircon installation to a climate control one?

    I'm wondering if it's just a bunch of relays and sensors followed by a Tech2 or a major rewiring job or just not possible....

    KEITH

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    Ex Vec-C Admin ed taylor's Avatar
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    Vehicle : Vectra Estate

    Trim : Elite

    Engine : 3.2 V6

    Year : 04

    Mileage : 000

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    I doubt it if it would be that easy, I may be wrong though, but I think there might be two heater matrix,s in the C/C as you can have two different tempretures one for each side of the car, also all the knobs are different to the non C/C , I fear it would be a very complecated job to change it over...
    Last edited by ed taylor; 23rd June 2006 at 12:23.

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    Mmmm.... Hadn't considered the dual control aspect.

    CC is the one thing I miss from my old Peugeot 406...

    KEITH

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    Climate control is one thing I don't miss. It was on a Passat I had and it constantly needed fiddling with. It was a right pain in the rear, more buttons than Cadburys.

    I prefer it kept simple, just one big knob, ohh er missus.

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    Regular Member greeningr's Avatar
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    Must admitt, I don't miss C/C either. had it in a Corolla and it was a pain, gave a constant cold draft on the feet..
    However, I hardly have the Vectra A/C on as it freezes me very quickly....

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    I doubt it is a reasonable thing to put climate control on a car that doesn't have it. The following things are required (and I'm sure this list is incomplete):
    1. ECC control unit
    2. Five stepper motors for the air mixing flaps
    3. Sun sensor
    4. Four duct temperature sensors plus one at the evaporator
    5. Mid speed CAN bus (!) and graphical information display if not already fitted for some other reason
    6. Different blower fan controller
    7. Air quality sensor (optional)

    And that's assuming that the A/C compressor and wiring harnesses are the same - highly unlikely to be true. It would probably be simpler to install a different engine...

    My Veccy C is the first car I've had with climate control. I wouldn't have considered it useful before I bought the car, but I'm pretty impressed with it, even though I generally leave the compressor off.

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    It's true that some manufacturers do a better implementation than others.

    I had a Merc C-Class as a hire car once and that suffered from the cold feet / couldn't get the right setting problem. The Peugeot seems to be a good installation though and always managed to maintain an even constant temperature. I only ever adjusted it between about 20 - 22 degrees dependant upon the heat of the sun and it was fine.

    One of the few things Peugeot got right though . . .

    KEITH

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    Quote Originally Posted by stevedee3
    I doubt it is a reasonable thing to put climate control on a car that doesn't have it. The following things are required (and I'm sure this list is incomplete):
    1. ECC control unit
    2. Five stepper motors for the air mixing flaps
    3. Sun sensor
    4. Four duct temperature sensors plus one at the evaporator
    5. Mid speed CAN bus (!) and graphical information display if not already fitted for some other reason
    6. Different blower fan controller
    7. Air quality sensor (optional)

    And that's assuming that the A/C compressor and wiring harnesses are the same - highly unlikely to be true. It would probably be simpler to install a different engine...

    My Veccy C is the first car I've had with climate control. I wouldn't have considered it useful before I bought the car, but I'm pretty impressed with it, even though I generally leave the compressor off.
    1. ECC control unit - is there a seperate one or is it all controlled centrally?
    2. Five stepper motors for the air mixing flaps - I think my flaps are already motorised
    3. Sun sensor - Yep
    4. Four duct temperature sensors plus one at the evaporator - Yep
    5. Mid speed CAN bus (!) and graphical information display if not already fitted for some other reason - Again I'd have thought this was already in
    6. Different blower fan controller - Why?
    7. Air quality sensor (optional) - Yep


    I agree that the harness is likely to be the most difficult problem though.

    KEITH

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    Quote Originally Posted by spacenase
    1. ECC control unit - is there a seperate one or is it all controlled centrally?
    2. Five stepper motors for the air mixing flaps - I think my flaps are already motorised
    3. Sun sensor - Yep
    4. Four duct temperature sensors plus one at the evaporator - Yep
    5. Mid speed CAN bus (!) and graphical information display if not already fitted for some other reason - Again I'd have thought this was already in
    6. Different blower fan controller - Why?
    7. Air quality sensor (optional) - Yep


    I agree that the harness is likely to be the most difficult problem though.

    KEITH
    1. ECC control unit - is there a seperate one or is it all controlled centrally? I'm talking about the box that sits below the radio - I think it directly controls everything except the compressor
    2. Five stepper motors for the air mixing flaps - I think my flaps are already motorised Maybe, but I think the non ECC air mixer motors are conventional, not stepper motors
    3. Sun sensor - Yep
    4. Four duct temperature sensors plus one at the evaporator - Yep
    5. Mid speed CAN bus (!) and graphical information display if not already fitted for some other reason - Again I'd have thought this was already in I think not all Vectras have the mid-speed CAN bus, depending on original vehicle equipment - the presence of a graphical screen is probably a reliable indicator for the inclusion of a mid-speed CAN
    6. Different blower fan controller - Why? ECC has seven (+off) speeds, non-ECC just has a set of resistors (I think)
    7. Air quality sensor (optional) - Yep


    I think the basic problem is that almost nothing in the elctrical system is common between the ECC and non-ECC car configurations...

    This all makes my dream of converting my halogen headlamps to bi-xenon with AFL seem rather trivial

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    Maybe it would be easier to design a control circuit and a robotic hand....



    KEITH

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