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Thread: blower fan noise

  1. #1
    Join Date
    Dec 2005
    Location
    VT
    Posts
    73

    Default blower fan noise

    Hi ... my blower fan started to sound as if it is scraping. Whats the likely cause and how can I fix it?
    thanks ....

  2. #2
    Join Date
    Jun 2006
    Location
    Bethesda, MD
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    385

    Default

    Quote Originally Posted by fsteyer
    Hi ... my blower fan started to sound as if it is scraping. Whats the likely cause and how can I fix it?
    thanks ....
    Exact same problem in the 535 I'm looking at... supposedly started just recently. Also fan control switch is bad.

  3. #3
    Join Date
    Jan 2004
    Location
    Apex, NC
    Posts
    471

    Default

    You probably thought of this, but just in case you didn't... Could be a leaf or pine needle or something made it in that far. Try running the blower full blast to blow it out or chew it up. (frequently have to do this in my old truck)
    Scott
    '93 525iT 245k miles (sold, but not forgotten)
    '11 TSX Sport Wagon
    '00 328i
    '78 MGB
    '08 Saab Aero


  4. #4
    Join Date
    Jan 2004
    Location
    Albuquerque, NM
    Posts
    953

    Default

    Could be leaves as mentioned. Also, the bearings could be dry and there's really no good way to get lube into them other than penetrating oil. Here's a link for accessing/swapping the blower motor:

    http://www.nmia.com/~dgnrg/page_15.htm
    gale
    92 735i 5-spd, turbo project finally underway!


  5. #5
    Join Date
    Dec 2005
    Location
    VT
    Posts
    73

    Default

    thanks ... but it doesn't sound like bad bearing noise. This sounds as if the fan blades are rubbing against something. So maybe its just debris and it will go away.

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