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  1. #1
    Established Member Two Rings
    Join Date
    Mar 18 2008
    AZ Member #
    26576
    Location
    Waukesha Wisconsin

    Odd squealing noise when heat is on

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    Hey guys my car has started making a weird squealing noise while my heat is on. The noise isn't always there though. Generally after about 10 min. or so the noise will start up. Once it has started it is NOT constant and it doesn't increase or decrease in volume if I turn the fun up or down. When I turn the fan off though the noise is gone.

    Any ideas?

    I could only really think of two scenarios first the fan is hitting the housing, but then the volume or frequency would change when adjusting the fan. Second there is something in my vents that is being moved around or something when air contacts it.

  2. #2
    Veteran Member Four Rings casawhites4's Avatar
    Join Date
    Jan 21 2007
    AZ Member #
    15020
    My Garage
    01.5 Silver Avant
    Location
    dc

    Re: Odd squealing noise when heat is on

    Your blower fan, behind the glove box isn't lubed still. Oil it up and your good
    01.5 Stage 3 Casablanca White S4 (GONE)
    01.5 Stage 0 Silver S4 Avant (New Project, def Grocery Getter)

    watch out Casablanca!!! im coming back with a vengeance!

    Silver will be the fastest now!!! :-D

  3. #3
    Established Member Two Rings
    Join Date
    Mar 18 2008
    AZ Member #
    26576
    Location
    Waukesha Wisconsin

    Re: Odd squealing noise when heat is on

    Thanks I'll give that a shot tomorrow

  4. #4
    Veteran Member Three Rings TRANS4M's Avatar
    Join Date
    Sep 15 2006
    AZ Member #
    11400
    My Garage
    02 Imola S4
    Location
    VA

    Re: Odd squealing noise when heat is on

    I have this same problem. Any suggestions on what to use to lube it?

  5. #5
    Senior Member Three Rings therox182's Avatar
    Join Date
    Apr 17 2007
    AZ Member #
    17358
    My Garage
    2001.5 s4 tip
    Location
    Hawthorne, NJ / Rutgers

    Re: Odd squealing noise when heat is on

    I used WD40 the first time i tried it, but the noise came back after a month or two. The second time i used some 3 in 1 oil we had at the house, seems to be holding up pretty well. No noise since

  6. #6
    Veteran Member Four Rings csre9's Avatar
    Join Date
    Feb 03 2008
    AZ Member #
    24844
    My Garage
    Stage 100 b5s4 hooked on meth, other money pits
    Location
    At work
    Items for Sale

    Re: Odd squealing noise when heat is on

    I have the same problem.
    It only makes the noise for the first 5 minutes while making a left turn only.
    Haha.

  7. #7
    Senior Member Two Rings jayski006's Avatar
    Join Date
    Dec 06 2008
    AZ Member #
    36055
    My Garage
    06 A4 Sline...B5 S4 Stg2+
    Location
    Toronto

    Re: Odd squealing noise when heat is on

    hahaha i have that problem too.. i noticed it got louder when i opened the glove compartment .. im guessing it is the fan behind there.. ill try lubing it.. hope that works!

  8. #8
    Veteran Member Four Rings LowA4's Avatar
    Join Date
    Aug 04 2007
    AZ Member #
    20071
    My Garage
    00 S4, 01 Allroad
    Location
    Gardnerville, Nv.
    Items for Sale

    Re: Odd squealing noise when heat is on

    Yeah mine does it around right hand turns. It's really annoying.
    00 S4 UUC VM2, BBS CH's, MTM springs
    00 S4
    00 S4
    01 Allroad 710n's, piggies, 517 tc, 034 street engine/trans mounts, VMR VB3 19x10
    02 stage 3 S4 sold

  9. #9
    Senior Member Three Rings BamfiNogaroS4's Avatar
    Join Date
    Feb 12 2008
    AZ Member #
    25179
    Location
    Denver, Co

    Re: Odd squealing noise when heat is on

    Same problem here ha I ll lube it today as well!

  10. #10
    Veteran Member Four Rings highPSI-S4's Avatar
    Join Date
    Oct 31 2005
    AZ Member #
    8584
    My Garage
    2008 Avus Silver RS4 Ti
    Location
    Herndon,Virginia
    Items for Sale

    Re: Odd squealing noise when heat is on

    Yeah me 2, mine gets louder the faster i drive. So annoying
    2008 AVUS Silver Ti | APR Tune | ECS H Pipe | Magnaflow Catless DP | Hotchkis RSB | K&N | 034 MAF Hose | Apikol (Red) Diff Mount | 034 TQ Mount | Stoptech Aero (F) Drilled Rotors | Stoptech SS lines | Stoptech F&R Pads| 6K HID | LED DRL's | LED City | CC Mod | Carbon Cupra R | KW H.A.S | Work Kiwami 19x10.5 et22 | Hankook V12 265/30 | 50% Tint

  11. #11
    Veteran Member Four Rings casawhites4's Avatar
    Join Date
    Jan 21 2007
    AZ Member #
    15020
    My Garage
    01.5 Silver Avant
    Location
    dc

    Re: Odd squealing noise when heat is on

    Quote Originally Posted by highPSI-S4 View Post
    Yeah me 2, mine gets louder the faster i drive. So annoying
    thats odd, id think its just with the fan speed, not car speed, i used 3-1 oil, sound came back, i think!!! not sure, i think i hear it for a second, turn the music down, and its not there anymore...fcuker keeps playing a game on me i think...but lube it from behind the glove box, and from the cabin filter area.
    01.5 Stage 3 Casablanca White S4 (GONE)
    01.5 Stage 0 Silver S4 Avant (New Project, def Grocery Getter)

    watch out Casablanca!!! im coming back with a vengeance!

    Silver will be the fastest now!!! :-D

  12. #12
    Established Member Two Rings
    Join Date
    May 26 2008
    AZ Member #
    29196
    Location
    Long Island

    Re: Odd squealing noise when heat is on

    Quote Originally Posted by casawhites4 View Post
    thats odd, id think its just with the fan speed, not car speed, i used 3-1 oil, sound came back, i think!!! not sure, i think i hear it for a second, turn the music down, and its not there anymore...fcuker keeps playing a game on me i think...but lube it from behind the glove box, and from the cabin filter area.
    so u dont have to drop the glovebox and pull out the whole assembly to lube it? i need to do mine as well.. was thinking silicone spray would be the best bet since u guys havent had lasting effects with wd40 or 3-1 oil

  13. #13
    Senior Member Two Rings jayski006's Avatar
    Join Date
    Dec 06 2008
    AZ Member #
    36055
    My Garage
    06 A4 Sline...B5 S4 Stg2+
    Location
    Toronto

    Re: Odd squealing noise when heat is on

    yeah how would we go abouts doing it?

  14. #14
    Established Member Two Rings
    Join Date
    Mar 18 2008
    AZ Member #
    26576
    Location
    Waukesha Wisconsin

    Re: Odd squealing noise when heat is on

    What they said...is there an easy way of doing this or do we have to drop the glovebox assembly

  15. #15
    Veteran Member Four Rings mholme's Avatar
    Join Date
    Jan 29 2007
    AZ Member #
    15226
    My Garage
    08 S4 00 S4
    Location
    MD
    Items for Sale

    Re: Odd squealing noise when heat is on

    Quote Originally Posted by Hyperlitebordr View Post
    What they said...is there an easy way of doing this or do we have to drop the glovebox assembly
    Drop the glovebox. It's pretty easy to do

    http://forums.audiworld.com/s4/msgs/2729810.phtml
    08 S4- Stock

    00 S4-APR 93 Piggies Custom True Dual exhaust AWE DTS ECS/Bilstein Coilovers 710N's Samco TBB Omori 52mm boost gauge SOLD

  16. #16
    Senior Member Three Rings
    Join Date
    Jan 17 2005
    AZ Member #
    4885
    My Garage
    2001 S4 - A4 1.8t
    Location
    New Jersey

    Re: Odd squealing noise when heat is on

    I have this same issue. It is more pronounced when I turn left. Also, if I turn the fan speed up it goes away.

  17. #17
    Registered Member Three Rings
    Join Date
    Jan 15 2009
    AZ Member #
    37470
    My Garage
    2001.5 audi s4 stage 3
    Location
    pennsylvania

    Re: Odd squealing noise when heat is on

    i thought i was the only one but i guess ill try to oil it up too myne only does it making right turns too

  18. #18
    Veteran Member Four Rings mrpeterparker's Avatar
    Join Date
    Oct 17 2007
    AZ Member #
    21873
    My Garage
    01 Silver B5S4
    Location
    minneapolis, mn
    Items for Sale

    Re: Odd squealing noise when heat is on

    i just replaced the entire thing.. heh
    Lurker

  19. #19
    Veteran Member Three Rings gmann's Avatar
    Join Date
    Jan 12 2008
    AZ Member #
    24077
    My Garage
    illegals and moonshine stills
    Location
    Under busted VW's/Audis, OH

    Re: Odd squealing noise when heat is on

    Quote Originally Posted by csre9 View Post
    I have the same problem.
    It only makes the noise for the first 5 minutes while making a left turn only.
    Haha.
    Left turn squeeler here as well!

    I am going to try some Mobil 1 synthetic spray lube on mine.



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