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help..loud 'bang' at A/C startup 850

posted by  850 owner on  Wed Jul 28 13:10 CST 2004
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last visit: Sun Sep 2 21:30 CST 2012
[RELATED]

Hi everyone,

I've noticed that when I start my 850 for the first time in the day, if I switch on the A/C shortly after startup, I get a loud "bang", or more like "thud" that can be felt from the interior. It almost sounds/feels as if something is shifting. The strange thing is that this noise only occurs at first start-up for the day (with A/C on), never whlie the compressor is cycling or when turning off/then turning on A/C after car has been driven. I am stumped. I am also hoping that someone has had a similar experience. A/C cools well (knocks on wood), and I'm not overly concerned as everything seems to be working properly. I am thinking perhaps the compressor is loose on its mounts. Just hoping someone has dealt with such a problem. Thanks!!
--
'94 854 N/A.








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    help..loud 'bang' at A/C startup 850

    posted by  Skipsteroo on  Wed Jul 28 15:31 CST 2004
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    I had that happen when I switched on the recirculation feature... big bang and now the a/c works really poorly. Cycles really fast. I'm having it looked at in a couple of weeks.

    -jw
    --
    96 850GLT wagon 152k








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    help..loud 'bang' at A/C startup 850

    posted by  VolFan on  Wed Jul 28 13:45 CST 2004
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    I had the same problem when I accidently overcharged my A/C. I evacuated and recharged and the problem went away. I hope this helps.








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      help..loud 'bang' at A/C startup 850

      posted by  cancerman on  Wed Jul 28 17:55 CST 2004
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      last visit: Sun Oct 7 17:36 CST 2007
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      How does one detect an overcharge other than the counting meathod? What are the appropriate pressures and test procedures? If I am overcharged, can I take my receipt to the... err... how do I properly evacuate?
      --

      -- Lucyen Gabbard
      96 854 Turbo 90k / 86 745 GLE 240k






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