348 - HVAC Control Restoration. | FerrariChat
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348 HVAC Control Restoration.

Discussion in '348/355' started by ChoonHound, Jun 5, 2023.

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  1. ChoonHound

    ChoonHound Formula 3
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    #1 ChoonHound, Jun 5, 2023
    Hello everybody. What’s the latest thinking on HVAC panel restoration; I think I need it? My shop disassembled the panel and fixed some broken solders, and that seemed to work for a bit, but now it’s on the fritz again.

    It can’t possibly be rocket science, it’s essentially a bunch oh off and on buttons… right? I found a thread from
    2014 with the email address of a man who fixed a panel for another member.

    Any leads appreciated!


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  2. Ferrarium

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    #2 Ferrarium, Jun 6, 2023
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  3. ChoonHound

    ChoonHound Formula 3
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    #3 ChoonHound, Jun 6, 2023
    It won’t stay on. It seems vibration and/or perhaps heat related. Upon start up it works, but after driving it loses power. Sometimes I’m able to poke it and get it to come back momentarily.


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  4. bjwhite

    bjwhite F1 Rookie
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    #4 bjwhite, Jun 6, 2023
    Hidden fuse I bet. :)
     
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  5. ChoonHound

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    #5 ChoonHound, Jun 6, 2023
    I’ve heard about this… is the fuse loose in its holder?
     
  6. GTO Joe

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    #6 GTO Joe, Jun 6, 2023
    A number of people on here reported problems with the rear electrical connector not fitting very tight especially on early cars. I think they moved the position of the plug on later models to take the strain off the plug. Might want to check that out.
     
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  7. ChoonHound

    ChoonHound Formula 3
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    #7 ChoonHound, Jun 6, 2023
    Mines a 93 build, but it does sound like that could be it. I will check!
     
  8. Ferrarium

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    #8 Ferrarium, Jun 6, 2023
    Commonly it is disassembled and the pins that stack together when reassembling are thoroughly cleaned and that often fixes this issue. Also the female pins may be stretched too wide and not firmly connecting.

    If it comes back on if you poke it, its not the hidden fuse as that's is in the front boot but it should be replaced with a glass audio fuse. You can see it in the sticky section.
    https://www.ferrarichat.com/forum/threads/hvac-flap-motor-and-hiden-fuse.590569/
     
  9. John Glen

    John Glen Formula Junior

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    #9 John Glen, Jun 15, 2023
    I am keen to follow your progress as my 348 has the same gremlins.................
     
  10. Ferrarium

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    #10 Ferrarium, Jun 16, 2023

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