Horn in `85 308gts does not work | FerrariChat
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Horn in `85 308gts does not work

Discussion in 'Technical Q&A' started by cecinestpasunjan, Jan 21, 2005.

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  1. cecinestpasunjan

    cecinestpasunjan Karting

    Sep 15, 2004
    51
    Frankfurt, Germany
    Full Name:
    Jan
    #1 cecinestpasunjan, Jan 21, 2005
    Hello all,

    When I press the horn button of my car, I just hear a "click" from the back but no sound. What could be wrong? Is it possible, that this is a maintenance issue, since the horn compressor has to be lubricated occasionally according to the owners manual?

    Regards,
    Jan
     
  2. Ferrari_tech

    Ferrari_tech Formula 3

    Jul 28, 2003
    1,527
    UK
    Full Name:
    Malcolm W
    #2 Ferrari_tech, Jan 21, 2005
    Sounds like the horn compressor, if lubricating doesn't work remove the compressor and remove the top (three screws) clean the vanes and the inner body and it should be okay.
     
  3. Glassman

    Glassman F1 World Champ
    Rossa Subscribed

    Apr 23, 2002
    15,254
    Montana, Oregon, Hawaii
    #3 Glassman, Jan 21, 2005
    Also hold the button down for a while. Mine will slowly build air up and finally start working again.
     
  4. sparta49

    sparta49 F1 Veteran
    Owner

    Mar 3, 2001
    7,804
    LA
    Full Name:
    Frank
    #4 sparta49, Jan 21, 2005
    I seem to remember a "vaccum" line on the compressor that got crushed on mine that caused mine to do the same thing. Make sure that isn't obstructed
     
  5. Birdman

    Birdman F1 Veteran

    Jun 20, 2003
    6,689
    North shore, MA
    Full Name:
    THE Birdman
    #5 Birdman, Jan 22, 2005
    The click you hear is likely the relay in the dash. That means the button and relay work. Pull the wire from the horn air pump itself and see if you have power to the horn. If you do, just take it apart and lube it. It's just an air pump. Be sure to put the three vanes back in the way they came out so the wear pattern matches up and the thing doesn't leak.

    If you have no power to the horn, start looking at the fusebox for power to the horn circuit, follow it to the relay, and the rest of the way. Something is flaky in the current path. Keep in mind that one fuse provides power to activate the relay, and another provides current to pass through the relay to the horn, so there are two potential fuses that can affect the horn operation. (Assuming the QV circuits are similar to the carb ones).

    Birdman
     
  6. Husker

    Husker F1 World Champ

    Dec 31, 2003
    11,792
    western hemisphere
    #6 Husker, Jan 22, 2005
    If all else fails, drive down to your local Harbor Freight Tool Company. They have the EXACT (and I mean EXACT) Fiamm horn compressor (with horns, too!) for 15 bucks or less. If you buy it from your local Ferrari store, that same compressor will run you well north of a $100 bill.

    Ahhhh, if we could only get ALL of our Ferrari parts from Harbor Freight!
     
  7. thecarreaper

    thecarreaper F1 World Champ
    Silver Subscribed

    Sep 30, 2003
    18,159
    Savannah
    #7 thecarreaper, Jan 23, 2005


    i replaced all the horn stuff on both of my 308's this way, it worked perfect!
     
  8. cecinestpasunjan

    cecinestpasunjan Karting

    Sep 15, 2004
    51
    Frankfurt, Germany
    Full Name:
    Jan
    #8 cecinestpasunjan, Jan 23, 2005
    I will try out your suggestions when I`ll reactivate the car after the winter break in a few weeks from now (God, why is time progressing so slowly?).

    Best regards,
    Jan
     

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