Wheezing Horn | FerrariChat
Buy

Wheezing Horn

Discussion in '308/328' started by 2dinos, Jul 11, 2010.

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

  1. 2dinos

    2dinos F1 Rookie

    Jan 13, 2007
    3,046
    #1 2dinos, Jul 11, 2010
    My horn is new. It sounds as useless as what I took out of there. I'm sure it's got to be a voltage issue. I've already put in a NOS of relays, and fuseblocks are new. I think there must be some other voltage issue going on here.

    Here's my question:
    If I take a DVM and connect it up at the horn, what's the MIN voltage I need to have to rule out voltage as being the culprit? Should 11.0V make music, 11.5V ? etc.

    Thanks!
     
  2. sammyb

    sammyb Formula 3

    Jun 23, 2006
    1,857
    Where wife tells me
    Full Name:
    Sam
    #2 sammyb, Jul 11, 2010
    In other cars I've owned the same problem has been solved by wire-brushing the connections at the fuse box and at the horns themselves. (Due to the placement in the front, the horn connections are especially prone to gunk and corrossion limiting the voltage.) In the past, I've had good luck with a small brass wire brush and dielectric grease. It seems to me that I had the same problem on my 328, but I know I've had the issue at least four times on various old cars.
     
  3. mwr4440

    mwr4440 Five Time F1 World Champ
    Rossa Subscribed

    Jun 8, 2007
    58,005
    Bavaria, The 'Other' Germany
    Full Name:
    Mark W.R.
    #3 mwr4440, Jul 11, 2010
    The horn systems on these cars have all sorts of problems, most easily fixable.

    Run a search and you will find several threads dealing with cleaning the compressor and relpacing the hoses. It might not be (just) a voltage problem.
     
  4. jimshadow

    jimshadow F1 Veteran
    Lifetime Rossa Owner

    Feb 19, 2006
    6,252
    Indiana/North Carolina
    Full Name:
    JIM
    #4 jimshadow, Jul 11, 2010
    Dont forget that these horns need a drop of oil to work properly. Do a search and you'll find the procedure. Mine had the same problem and a drop of oil cured it.

    JIM
     

Share This Page