355 owners: When you're accelerating, do you hear a..... | FerrariChat
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355 owners: When you're accelerating, do you hear a.....

Discussion in '348/355' started by Crawford, Aug 17, 2006.

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  1. Crawford

    Crawford Formula 3

    Mar 5, 2003
    1,294
    Nashville, TN
    Full Name:
    Crawford White
    #1 Crawford, Aug 17, 2006
    whistling sound that goes up in pitch with the revs of the engine?

    My car's been doing this since I bought it. Just curious what it is - a vacuum leak? A normal sound??
     
  2. J.P.Sarti

    J.P.Sarti Guest

    May 23, 2005
    2,426
    #2 J.P.Sarti, Aug 17, 2006
    Not at all
     
  3. GWood355

    GWood355 Karting

    May 24, 2006
    108
    Little Rock, AR
    Full Name:
    Gregory D Wood
    #3 GWood355, Aug 17, 2006
    Yes If it is the same noise I think you are talking about it is normal. It occasionally occurs when you are accelerating quickly or steadily you get that characteristic F-sound and occasionally in there you get that high pitch sound which I think has something to do with a value on the exhaust side. There are a few F-mechanics that post here and hopefully one of them will pick up this thread and can explain.

    Greg
     
  4. anunakki

    anunakki Seven Time F1 World Champ
    Owner Rossa Subscribed

    Oct 8, 2005
    78,870
    Las Vegas Nevada
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    Jerry
    #4 anunakki, Aug 17, 2006
    could also be interference with radio..my 355 had that when i bought it..
     
  5. broepke

    broepke Karting

    Feb 25, 2006
    142
    San Francisco, CA
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    Brian Roepke
    #5 broepke, Aug 18, 2006
    Totally have no real clue but my BMW 3 series does this and its a common BMW problem. In the Bimmer there is a boot on the air intake that ends up sucking some air... Since there is a LOT of air suckage on the 355 it is possible that there is a similar issue... a small leak sucking air... check hose clamps, boots, etc. off the air boxes for small leaks.
     
  6. americasnutrition

    americasnutrition Karting

    Jul 4, 2006
    58
    Indiana
    Full Name:
    Dean
    #6 americasnutrition, Aug 19, 2006
    I had that issue in my Porsche, and it turned out to be interference with my radio. The sound was actually coming out of the speakers as the engine rpm's go higher. Fixed the radio wiring and the sound was gone.
     
  7. PAP 348

    PAP 348 Ten Time F1 World Champ
    Lifetime Rossa Owner

    Dec 10, 2005
    100,219
    Mount Isa, Australia
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    Pap
    #7 PAP 348, Aug 19, 2006

    They usually have noise suppressors/condensors on the alternator to stop that noise coming through your speakers. Maybe thats what is wrong here with this 355. :)
     
  8. GWood355

    GWood355 Karting

    May 24, 2006
    108
    Little Rock, AR
    Full Name:
    Gregory D Wood
    #8 GWood355, Aug 20, 2006
  9. Crawford

    Crawford Formula 3

    Mar 5, 2003
    1,294
    Nashville, TN
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    Crawford White
    #9 Crawford, Aug 27, 2006
    If you're talking about the sound of the bypass valve opening up, that's not the sound. It's more of a whistling sound.
     
  10. GWood355

    GWood355 Karting

    May 24, 2006
    108
    Little Rock, AR
    Full Name:
    Gregory D Wood
    #10 GWood355, Aug 27, 2006
    When you find out what the problem is let us know. Good luck

    Greg
     
  11. J. Salmon

    J. Salmon F1 Rookie
    Owner Rossa Subscribed

    Aug 27, 2005
    4,367
    VA
    #11 J. Salmon, Aug 27, 2006
    Just came back from an evening drive (wife wants to know why I have to take the car out two times today...!!)

    No, I do not get a whistling sound. I have a tubi. There is a pronounced whistle out of my friends 328 that I believe is intake noise. I have a video from VIR with both cars, and you can hear his for certain. No such noise out of my car at all.
     

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