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Thread: Burnt smell through the vents and AC quit working

  1. #1
    Join Date
    Jun 2012
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    Woodstock, GA
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    2001 BMW 540i6

    Burnt smell through the vents and AC quit working

    I just recharged my system on Wednesday and it’s been working great until about an hour ago I had it on, it quit suddenly and I got this weird burnt smell through the vents, maybe it was R134 it smelled similar but not quite the same. Any common failure that could be or am I just in for some diag

  2. #2
    Join Date
    Dec 2006
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    6.5 second 69 Camaro
    Wasn't your compressor clutch? Does the compressor still turn when the AC is turned on? Belt still in place.

  3. #3
    Join Date
    Jun 2012
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    2001 BMW 540i6
    Now none of my windows or sunroof work. They only open and close holding the key in the lock. But the switches for all 4 windows and the sunroof don’t work.

    The ac thing happened, windows worked fine. Parked it, came back out, no window or sunroof function from the switches

    What fuses control the windows and stuff because something has shorted out
    Last edited by killian665; 05-05-2018 at 03:16 PM.

  4. #4
    Join Date
    Jun 2012
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    Yeah found it, compressor or the clutch locked up. It’s making some nasty bearing noise and blows the number 29 fuse every time I turn the AC on

  5. #5
    Join Date
    Jun 2008
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    Supercharged 850ci
    Quote Originally Posted by killian665 View Post
    Yeah found it, compressor or the clutch locked up. It’s making some nasty bearing noise and blows the number 29 fuse every time I turn the AC on
    I was gonna suggest bad Alpine stereo install
    Glad you found the problem.

  6. #6
    Join Date
    Jun 2012
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    Quote Originally Posted by dragon850 View Post
    I was gonna suggest bad Alpine stereo install
    Glad you found the problem.
    That was my first guess lol. Took that shit out real quick

  7. #7
    Join Date
    Jan 2009
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    Orlando, FL USA
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    91 850
    Quote Originally Posted by killian665 View Post
    Yeah found it, compressor or the clutch locked up. It’s making some nasty bearing noise and blows the number 29 fuse every time I turn the AC on
    Yup, when I first got my car, turning on the AC blew the fuse (#29) every time. What made it worse was the stupid high heat on the foot well. Crazy uncomfortable during the summer time.
    I had the AC compressor clutch rebuilt. Before the clutch rebuild, it sounded like a jack hammer under the hood.

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