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what makes the wisteling noise on 355 warm up.

Discussion in '348/355' started by chaa, Feb 26, 2004.

  1. chaa

    chaa F1 Veteran

    Mar 21, 2003
    5,058
    I have noticed on all the 355 that i have seen, that during the first min of cold start warm up, a wisteling noise comes from the engine then exactly two mins later it stops. I was told that it makes this noise during warm up, to let you know that its warming up.is this right and what makes it?
     
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  3. Doody

    Doody F1 Veteran

    Nov 16, 2001
    6,099
    MA USA
    Full Name:
    Mr. Doody
    auxiliary cooling fan?

    doody.
     
  4. ty (360mode)

    ty (360mode) Formula Junior

    Sep 25, 2002
    807
    Houston
    Full Name:
    Tim
    i'm curious about this too as my 355 did the same thing.
     
  5. VS1

    VS1 Karting

    Oct 16, 2002
    197
    Beavercreek, OH
    Full Name:
    Vishal Soin
    I've noticed the exact same thing. So, I'm intereted in finding out what it is as well...............................V
     
  6. dan360

    dan360 F1 Rookie

    Feb 18, 2003
    2,669
    Boston
    If its the same as the 360 (which seems likely) its the "secondary air system". Essetially a fan etc system that warms up the cats more quickly that they otherwise would.

    It might also be the "power steering issue" - mine is very noisy for the first couple of minutes when its really cold. This is a very different noise to the secondary air which happens all the time hot or cold weather.
     
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  8. ferrari355gtb

    ferrari355gtb Formula 3

    Nov 3, 2003
    1,600
    UK
    Full Name:
    R
    Cold air injection for cold starting (similar effect to a choke ???). Mine hadn't been working for a while (blown fuse) now mended and cold starting and running is a lot better.
     
  9. dan360

    dan360 F1 Rookie

    Feb 18, 2003
    2,669
    Boston
    #7 dan360, Feb 26, 2004
    Last edited by a moderator: Sep 7, 2017
    More tech detail on the 360 version attached in a pic. NB if you're on owners.ferrari.com you can download a pdf manual which is cool for these questions. Pretty much every ferrari since the 250 series.

    On final interesting detail. Failures with the check process described below were one of the primary causes of the check engine light on 360s until they updated the ECUs.
    Image Unavailable, Please Login
     
  10. sandersja

    sandersja Formula Junior

    Jan 16, 2003
    367
    Portland OR
    Full Name:
    John Sanders
    It is the electric air pump that runs until the cats have been warmed up.
     
  11. chaa

    chaa F1 Veteran

    Mar 21, 2003
    5,058
    Nice one dudes, Ta very much.
     
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  13. notoboy

    notoboy F1 Rookie

    Jul 8, 2003
    2,531
    NYC
    Full Name:
    David
    Been wondering the answer to that question for 4 years now...
    Thanks
     
  14. chaa

    chaa F1 Veteran

    Mar 21, 2003
    5,058
    I have a strange feeling that many have thought about asking that question...... but were afraid to in case it was expensive to put right. HA! HA! F***ing Ferraris.
     
  15. David_S

    David_S F1 Veteran
    Silver Subscribed

    Nov 1, 2003
    9,876
    Mountains of WNC...
    Full Name:
    David S.
    It's just your neighbors as they're thinking "Man, I wish I had a sweet ride like that!" :)
     
  16. tifosi69

    tifosi69 Formula 3

    Dec 23, 2003
    1,671
    Atlanta, Ga.
    Full Name:
    Al-Al Cool J
    I agree. LOL
     

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