Welcome to ZRoadster.org - BMW Z1 Z4 Z8 Z3 Forum and Technical Database

If you want to join in with the discussion, and see the areas which are available only to members then sign up now!

  1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Aircon barely works, assistance please

Discussion in 'Z3 Roadster & Coupé' started by Cooper, Sep 23, 2014.

  1. Cooper

    Cooper Zorg Guru (IV)
    Supporter Australian Zeds

    Joined:
    Apr 17, 2014
    Messages:
    1,155
    Likes Received:
    743
    Trophy Points:
    152
    Location:
    Hobart Tasmania Australia
    Model of Z:
    3.0i 2001
    Hi, I got my aircon re-gassed a week or so ago as the cool air was not really cold at all. I just tested it on a couple of long runs and it is still the same!

    The compressor kicks in and the air is cooled, or cooler than it would normally be, but is still pathetic. I have tried on recirculate, temperature all the way to left in the blue, and like I said - on long runs just to make sure there is time for it to circulate the gas.

    Any ideas on what I can go or should look out for? Thanks.

    Coops
     
  2. hard top

    hard top Zorg Expert (I)
    Dutch Zeds The M44 Massive

    Joined:
    Dec 5, 2011
    Messages:
    20,672
    Likes Received:
    6,020
    Trophy Points:
    213
    Location:
    Netherlands
    Did you get the system checked for leaks?
    I had that once on a Merc. Turned out a stone or something had hit the rad.
     
    • Thank You! Thank You! x 1
  3. Cooper

    Cooper Zorg Guru (IV)
    Supporter Australian Zeds

    Joined:
    Apr 17, 2014
    Messages:
    1,155
    Likes Received:
    743
    Trophy Points:
    152
    Location:
    Hobart Tasmania Australia
    Model of Z:
    3.0i 2001
    I asked him if there were any leaks and I got a 'no'. hmmm. if the gas gets low the compressor will not operate - is that correct? This is why I was wondering if the gas might be in there still. Come to think of it - maybe the compressor isn't actually working but the clutch engages [I can feel a drop in power]. I don't understand a whole lot about this. Thanks.
     
  4. badman gee

    badman gee Guest

    You possibly have a slow leak.

    Normally cold when gassed but it doesn't last for long

    They only way to test for leaks is to inject a dye and then run the car for a while.

    You can then check.
    As HT says the usual suspect is the condensor radiator I beleive.

    It's positioning isn't ideal as its prone to stone damage.

    Hope this helps.
     
    • Agree Agree x 3
    • Thank You! Thank You! x 1
  5. Cooper

    Cooper Zorg Guru (IV)
    Supporter Australian Zeds

    Joined:
    Apr 17, 2014
    Messages:
    1,155
    Likes Received:
    743
    Trophy Points:
    152
    Location:
    Hobart Tasmania Australia
    Model of Z:
    3.0i 2001
    Thanks guys, I will take it in tomorrow and get her checked out again. I hope it is easy to get repaired if damaged... or will I need a new one if there is stone damage?
     
  6. hard top

    hard top Zorg Expert (I)
    Dutch Zeds The M44 Massive

    Joined:
    Dec 5, 2011
    Messages:
    20,672
    Likes Received:
    6,020
    Trophy Points:
    213
    Location:
    Netherlands
    Do not want to spoil your day but it cost me E.700.00 for a new rad on the Merc.
     
  7. t-tony

    t-tony Zorg Expert (I)
    Supporter British Zeds

    Joined:
    Dec 31, 2013
    Messages:
    30,144
    Likes Received:
    14,232
    Trophy Points:
    220
    Location:
    Torksey Lock,Lincoln, England
    Model of Z:
    Z4 3.0 Auto
    The a/c can be tested for leaks by use of a bottle of inert gas to pressurise the system without using the refrigerant . The condenser is very prone to stone damage,but,at least it protects the coolant radiator which can cause far more money's worth of damage if it leaks!

    Tony.
     
    • Like Like x 1
    • Thank You! Thank You! x 1
  8. oldcarman

    oldcarman Zorg Guru (V)
    Supporter Canadian Zeds The M44 Massive

    Joined:
    Feb 11, 2014
    Messages:
    9,986
    Likes Received:
    3,617
    Trophy Points:
    177
    Location:
    Pine Falls Manitoba can.
    Model of Z:
    1.9 M44
    A good rad repair shop can usually fix small leaks fairly cheaply or rebuild yours. If you buy a used condensor be sure to get it pressure tested as T- has mentioned. Compressors seem to be another culprit if the A/C didn't get used a lot. They develop a flat spot which leaks slowly. Even in winter here we're advised to turn on the air a couple of times a month for a short period. HTH JIM
     
    • Thank You! Thank You! x 1
  9. Cooper

    Cooper Zorg Guru (IV)
    Supporter Australian Zeds

    Joined:
    Apr 17, 2014
    Messages:
    1,155
    Likes Received:
    743
    Trophy Points:
    152
    Location:
    Hobart Tasmania Australia
    Model of Z:
    3.0i 2001
    I took the car to the mechanic and it is booked in for Monday. He said they would test and re-gas for free but if any repairs are required I will just have to pay for that. Sounds good to me ad I will let you guys know what happens.
     
    • Like Like x 2
  10. Cooper

    Cooper Zorg Guru (IV)
    Supporter Australian Zeds

    Joined:
    Apr 17, 2014
    Messages:
    1,155
    Likes Received:
    743
    Trophy Points:
    152
    Location:
    Hobart Tasmania Australia
    Model of Z:
    3.0i 2001
    Good news guys! The mechanic dyed and pressurized the system and it was found there was a leak in TX valve area. The seal was replaced and re-gassed and it works like new. There was no extra charge for the work and I am happy.
     
    • Like Like x 4
  11. zedonist

    zedonist Guest

    Result! :scorecard:
     
    • Like Like x 1
  12. t-tony

    t-tony Zorg Expert (I)
    Supporter British Zeds

    Joined:
    Dec 31, 2013
    Messages:
    30,144
    Likes Received:
    14,232
    Trophy Points:
    220
    Location:
    Torksey Lock,Lincoln, England
    Model of Z:
    Z4 3.0 Auto
    Nice one coops. Pleased for you mate.
    Tony.
     

Share This Page