CX air-con - Tx valve numbers wanted
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  1. #1
    Fellow Frogger! Rob T's Avatar
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    Oct 2002
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    Icon5 CX air-con - Tx valve numbers wanted

    As the last job before I put the engine back into the CX, I want to sort out the air conditioning. This includes making up new hoses while access to the firewall area is still easy and fitting a new compressor. My car is an 81 model with the locally made second evaporator in the boot. The rear unit works fine - in fact we fitted a solenoid and thermostat so that the rear unit will cut in and out independantly to the front because it was too cold in the back. However, the front unit is still more feeble than is usual.

    My mobile air-con specialist thinks that the Tx valve in the front evaporator is too 'big' - i.e. it allows liquid gas thru rather than forcing evapoartion at that point. I know that the Tx valve was changed a few years ago to a new one suitable for R134a. We are having trouble finding out what the original Tx valves fitted to these cars were. If we had the original numbers then he is confident that we could cross match to a new equivalent.

    So, would those of you who have a CX please check the numbers stamped on the Tx valve and report back here. I would aslo be interested to know how many of you have air-con that works OK, and whether or not you are still using the original Tx valve or if it has been replaced with a modern equivalent. I know that I can't expect the same cooling capacity as modern cars, but I am sure that mine should work much better than it does now.

    As a last resort, we could fit one of the original R12 valves. If any of you have one to spare please let me know.

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    Robert Thorne
    Brisbane
    Citroenless - for now...

  2. #2
    Moderator Alan S's Avatar
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    I don't know why the air/con man is having any strife working this out as the T/X on older type cars was usually just a standard 1.5 ton capacity.
    I bought one for my car when I was down the Gold Coast and in those days Acrol/Phillips was operating at Bundall. They were also in Brisbane and supplied most of that stuff to the trade but would sell direct I understand.

    Alan S
    If it ain't broke, use a 12" shifter.....that usually does the trick!!

  3. #3
    Fellow Frogger! Rob T's Avatar
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    I think that is the problem, Alan.

    The valve on my car is 2 ton (was commonly fitted to Falcons) and his guess is that it is too big. Apparently the arrangement and size of inlet and outlet pipes is pretty unusual now - so there is fairly limited number of choices.

    At least your recolection of the valve being 1.5 ton is good info. Thanks Alan.
    Robert Thorne
    Brisbane
    Citroenless - for now...

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