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

  1. #1
    Join Date
    Jun 2022
    Jacksonville Fl
    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
    Join Date
    Nov 2008
    Lakewood, CO
    My Cars
    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.
    1989 Zinnoberrot 325iX Sedan - My winter snowmobile. (Deceased)
    1998 Avus Blau 328iC - My topless summer girl.
    1999 Audi A4 Avant Quattro - I hate this car. Why won't it die?
    2008 Platinum-Beige X3 3.0si - Current project
    2012 Alpine White X3 xDrive35i - My new snowmobile.

  3. #3
    Join Date
    Feb 2009
    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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