AC clicking noise | FerrariChat
Buy

AC clicking noise

Discussion in '348/355' started by ginsuguy, May 18, 2008.

This site may earn a commission from merchant affiliate links, including eBay, Amazon, Skimlinks, and others.

  1. ginsuguy

    ginsuguy Karting

    May 4, 2006
    209
    #1 ginsuguy, May 18, 2008
    Anyone ever have this problem? Distinct clicking noise from the engine when the AC is on. When you turn AC off, it goes away. Also does it when the air has been running foe awhile...Thanks all
     
  2. PAP 348

    PAP 348 Ten Time F1 World Champ
    Lifetime Rossa Owner

    Dec 10, 2005
    100,199
    Mount Isa, Australia
    Full Name:
    Pap
    #2 PAP 348, May 18, 2008
    Strange. :):)

    So there is a noise when the a/c is running. Yes? :):)

    Noise goes away when a/c turned off? Yes? :):)

    There is the same noise when the a/c is off, but the a/c fan is running? Yes? :):)
     
  3. ginsuguy

    ginsuguy Karting

    May 4, 2006
    209
    #3 ginsuguy, May 18, 2008
    Noise comes on when the compressor kicks on, noise is off when the compressor goes off. No other time do I hear noise..thanks PAP 348
     
  4. Marco Bussadori

    Marco Bussadori Formula Junior

    Aug 6, 2007
    430
    London
    Full Name:
    Marco Bussadori
    #4 Marco Bussadori, May 18, 2008
    Folks, the Air Conditining compressor has an electomagnetic clutch, that clicks on and off when the compressor is needed to come on-line. This is driven by the demand for cold air and the thermostatic control (knob in Mondials and elenctronic LED on the 348). Colder the air, the longer the compressor is needed on-line.

    The sound is a distinctly mechanical sound. It should "click" immediately upon pressing the AC button, and disengage when selecting "off". Sometimes the disengagement is not as audible as the engagement.

    Marco
     
  5. ginsuguy

    ginsuguy Karting

    May 4, 2006
    209
    #5 ginsuguy, May 18, 2008
    Marco noise stays on and never goes away until the compressor is turned off. Its a contact clicking over and over
     
  6. PAP 348

    PAP 348 Ten Time F1 World Champ
    Lifetime Rossa Owner

    Dec 10, 2005
    100,199
    Mount Isa, Australia
    Full Name:
    Pap
    #6 PAP 348, May 19, 2008

    Thanks for clearing that up mate. :):)

    What you're describing is called "short-cycling." The most common reason for it is the system is low on refrigerant. :):)

    Throw some a/c gauges on it mate and see what the pressures are doing. ;);)
     
  7. ginsuguy

    ginsuguy Karting

    May 4, 2006
    209
    #7 ginsuguy, May 19, 2008
    Thanks PAP!
     
  8. PAP 348

    PAP 348 Ten Time F1 World Champ
    Lifetime Rossa Owner

    Dec 10, 2005
    100,199
    Mount Isa, Australia
    Full Name:
    Pap
    #8 PAP 348, May 19, 2008

    Anytime my brother. ;);)
     
  9. ginsuguy

    ginsuguy Karting

    May 4, 2006
    209
    #9 ginsuguy, May 20, 2008
    Had the pressure checked and the system is full. Blowing cold air. Now the clicking is intermittent but stays on until you shut the compressor off. Could the compressor be on the way out?
     
  10. PAP 348

    PAP 348 Ten Time F1 World Champ
    Lifetime Rossa Owner

    Dec 10, 2005
    100,199
    Mount Isa, Australia
    Full Name:
    Pap
    #10 PAP 348, May 20, 2008


    Hhhmmm..........:):)

    Perhaps the a/c relays need cleaning?

    Maybe the a/c clutch has an internal short?

    Low pressure switch could be faulty, causing the compressor to cut in and out?

    Suprisingly enough, compressors should last the life of the car. If they are not serviced correctly, (meaning not enough oil or a/c system gets overcharged and the compressor has to 'lug' on start up), they will not last long. But I think your compressor is ok, the problem lies elsewhere mate. :):)

    Something electrical, if it is full of gas. :):)
     
  11. taz355

    taz355 F1 Veteran
    Owner Silver Subscribed

    Feb 18, 2008
    6,007
    Indio Ca/ Alberta
    Full Name:
    Grant
    #11 taz355, May 20, 2008
    Had similar noise on my 99 f1 found if i turned ac on high for a few minutes then back to a low setting it would stop. Does yours stop if you do this.
     
  12. tamf328

    tamf328 Formula Junior

    Mar 9, 2005
    477
    #12 tamf328, May 21, 2008
    jack the car up and look at the compressor while it's working???
     
  13. kingsdare

    kingsdare Karting

    Oct 24, 2006
    132
    California
    Full Name:
    David King
    #13 kingsdare, May 21, 2008
    I recall someone on the forum had a similar problem and it turned out to be a faulty ground at the compressor. They installed a ground strap to the compressor and that took care of the noise.
     
  14. ginsuguy

    ginsuguy Karting

    May 4, 2006
    209
    #14 ginsuguy, May 21, 2008
    Thanks everyone. Will try all suggestions an report back
     
  15. flyguyskt

    flyguyskt Formula Junior

    Sep 22, 2009
    443
    South Dakota
    Full Name:
    sean
    #15 flyguyskt, Jun 23, 2010
    sorry to dredge up an old thread but atleast i did a search! lol

    my a/c is making the same noise but also kind of squeels a bit blows cold for the 10 seconds i can stand the sound. i left it run once and it blew the hidden 30amp.

    any help with this guys would be great. i am actually a universal refrigeration tech but dont deal with cars ever. have guages 134A etc.

    this sounds like a compressor issue not a ref. issue but??? your colaborate knowledge is far mor than my pea brain!
     
  16. flyguyskt

    flyguyskt Formula Junior

    Sep 22, 2009
    443
    South Dakota
    Full Name:
    sean
    #16 flyguyskt, Jun 24, 2010
    so no ideas? bummer figured this would be an easy one.... :-(
     

Share This Page