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Thread: AC blows cold only when accelerating, blows but no cold while idling.

  1. #1
    Join Date
    Jun 2022
    Location
    Jacksonville Fl
    Posts
    11
    My Cars
    1990 325i

    AC blows cold only when accelerating, blows but no cold while idling.

    AC blows very cold air while driving and accelerating but only blows air but not cold air while idling. Any ideas?

  2. #2
    richardodn's Avatar
    richardodn is offline Old Guy BMW CCA Member
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    Nov 2008
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    08 X3 3.0si, 12 X3 35iX
    Does the aux fan turn on when you turn AC on?
    "Howdy, Folks!"

    1986 Delphin 528e - Has led a hard life, 290k and still alive.
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  3. #3
    Join Date
    Feb 2009
    Location
    Arizona
    Posts
    1,980
    My Cars
    1998 e36
    worn out compressor, incorrect refrigerant pressure, auxiliary fan not working will cause the pressure to be high at idle

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