HELP with 355 A/C electrical problems | FerrariChat

HELP with 355 A/C electrical problems

Discussion in 'Technical Q&A' started by Bill2, Jun 8, 2006.

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  1. Bill2

    Bill2 Formula Junior

    Oct 4, 2004
    340
    GA
    My 1995 355 had a frozen compressor so I bought a bunch of new parts from Ricambi and now the wiring is not cooperating.

    Here are the parts that were replaced:
    A/C compressor
    Expansion Valve
    Dehydrator w/switch
    New belts

    Then the system was flushed a couple of times and charged.

    When the STOP button is released it blows the 10 amp fuse in the trunk. There are two wires going to this fuse that must come from the STOP button and they get VERY HOT.

    Also, it appears that the 2 wires from the dryer look melted together.

    Does anyone have any ideas of what to check?

    Thanks,

    - Bill
     
  2. ernie

    ernie Two Time F1 World Champ
    Lifetime Rossa Owner

    Nov 19, 2001
    22,620
    The Brickyard
    Full Name:
    The Bad Guy
    Have you made sure that your ground wires are connected properly?
     
  3. PAP 348

    PAP 348 Ten Time F1 World Champ
    Lifetime Rossa Owner

    Dec 10, 2005
    100,234
    Mount Isa, Australia
    Full Name:
    Pap
    The TX valve, drier and belts are not at fault. The two wires that are melted together are related to the fault but its not the fault either, all that switch does it allow 12VDC to travel through the binary switch as a safe guard for your compressor that you have either too much or not enough refridgerant head pressure in your air con system and that usally goes from there to your air con compressor clutch. At a stab in the dark I suspect your air con compressor coil wiring or internal coil has a dead short to ground thus blowing your fuse. Using a mulitimeter perform a continiuity check across the two wires leading to your compressor like Ernie suggested and see how you go.
     
  4. Bill2

    Bill2 Formula Junior

    Oct 4, 2004
    340
    GA
    Thanks guys

    Bill
     

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