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Thread: Strange noise

  1. #1
    Join Date
    Dec 2012
    Location
    Surrey England
    Posts
    61
    My Cars
    1994 840 coupe silver

    Strange noise

    This morning on the way to work in the dark

    There was a strange noise from behind the dash air vents above 10 mph i think.

    As i went faster it got noisier on the way home in daylight there was no sounds
    But when i operated the lights the noise was straight back turning off the light it stopped

    ??????????????
    Any thoughts

  2. #2
    Join Date
    Oct 2010
    Location
    Sydney, Australia
    Posts
    833
    My Cars
    1997 840Ci
    Hard to offer suggestions without more details of the noise. Check your light pod adjusters for secure mounting & that the covers are not loose. May be rattling in the breeze. Also check the dampers.

  3. #3
    Join Date
    Jul 2012
    Location
    North Carolina, USA
    Posts
    874
    My Cars
    1997 BMW 840Ci, 1985 Fer

    Strange noise

    I experienced something similar a couple of years ago. It might be a loose plastic shroud up under the windshield wiper. When the lights are raised, there is increased turbulence over the hood, which can change the pitch of the vibration. I would usually hear it when the lights were up.


    Sent from my iPhone using Tapatalk Pro
    Last edited by BobieM; 03-14-2017 at 09:26 AM.
    Matthew M.
    North Carolina, USA
    1997 840Ci | 2001 740iL | 1985 308GTSi Quattrovalvole

  4. #4
    Join Date
    Dec 2012
    Location
    Surrey England
    Posts
    61
    My Cars
    1994 840 coupe silver
    I will look at the black plastic shroud at the weekend as i did remove it at the end last year to clean and remove leaves, thanks.

  5. #5
    Join Date
    Dec 2012
    Location
    Surrey England
    Posts
    61
    My Cars
    1994 840 coupe silver
    Noise UPDATE
    TOOK THE CAR FOR A QUICK FAST DRIVE
    NOISE STILL THERE
    lOOKED UNDER THE HOOD AND YES THE PLASTIC SMALL COVER TO THE LEFT OF THE WINDSCREEN BLACK COVER WAS LOOSE 2 FIXINGS REPLACED AND NO MORE NOISE WHEN HEADLIGHTS UP

  6. #6
    Join Date
    Nov 2012
    Location
    Hertfordshire, UK
    Posts
    374
    My Cars
    98 840ci sport, 03 M3
    Do you only get it when the heater /fan is closed /off? Or is it all the time?

  7. #7
    Join Date
    Jul 2012
    Location
    North Carolina, USA
    Posts
    874
    My Cars
    1997 BMW 840Ci, 1985 Fer
    Quote Originally Posted by arthur1952 View Post
    Noise UPDATE
    TOOK THE CAR FOR A QUICK FAST DRIVE
    NOISE STILL THERE
    lOOKED UNDER THE HOOD AND YES THE PLASTIC SMALL COVER TO THE LEFT OF THE WINDSCREEN BLACK COVER WAS LOOSE 2 FIXINGS REPLACED AND NO MORE NOISE WHEN HEADLIGHTS UP
    Good to know


    Sent from my iPhone using Tapatalk Pro
    Matthew M.
    North Carolina, USA
    1997 840Ci | 2001 740iL | 1985 308GTSi Quattrovalvole

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