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Mondial 3.2 AC will not turn on

Discussion in 'Mondial' started by ATSAaron, Jul 31, 2019.

  1. ATSAaron

    ATSAaron Formula 3
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    Aaron Bunch
    #1 ATSAaron, Jul 31, 2019
    Hi guys. My 1987 Mondial 3.2 coupe is running again. The AC has most of a charge, the low and high side pressures are sitting about 92psi. But the compressor will not turn on. Does anyone have a wiring diagram of the Mondial 3.2 AC system?

    Thanks,

    Aaron
     

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  2. spicedriver

    spicedriver F1 Rookie

    Feb 1, 2011
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    #2 spicedriver, Jul 31, 2019
    Probably not enough coolant. You have to vacuum pump the system out and put in a measured amount of coolant. It'a also important to install a new dryer first. There was an article on the 328 (same) system:

    http://ferrari.cdyn.com/carl_rose_docs/Ferrari%20328%20AC%20Recharge.pdf
     
  3. ATSAaron

    ATSAaron Formula 3
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    #3 ATSAaron, Jul 31, 2019
    Thanks for the reply, but that’s not it. The system is leak free and has a reasonable amount of charge. Also I bypassed the high/low pressure switch just to test.

    If I jumper power to the compressor it works. That also jumpers power to the condense fan circuit at the same time. That also work.

    Currently I’m thinking it’s the AC controller under the passenger floor board.

    Aaron
     
  4. spicedriver

    spicedriver F1 Rookie

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    #4 spicedriver, Aug 1, 2019
  5. mike32

    mike32 F1 Rookie

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    #5 mike32, Aug 1, 2019
    Yes i have the 3.2 wiring diagrams, let me have an e mail address and will send them
     

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  6. ATSAaron

    ATSAaron Formula 3
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    #6 ATSAaron, Aug 1, 2019
  7. Frabello72

    Frabello72 Rookie

    Jun 24, 2017
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    #7 Frabello72, Aug 1, 2019
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    Hi, try to check the socket in front of the passenger sit (where the Ac controller is located) in my car the socket was disconnected.
     
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  8. mike32

    mike32 F1 Rookie

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    #8 mike32, Aug 1, 2019
    Looking at the wiring diagram there is a glass fuse in the unit which varies the fan speed. Might be worth a look. Diagram coming shortly
     
  9. mike32

    mike32 F1 Rookie

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    #9 mike32, Aug 1, 2019
    Drawings sent
     

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  10. ATSAaron

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    #10 ATSAaron, Aug 1, 2019
    Drawings received. Thanks.
     
  11. cianfichi

    cianfichi Rookie

    Oct 21, 2013
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    #11 cianfichi, Aug 1, 2019
    Hello spicedriver, not to detract from this thread and this is off-topic. I'm having issues with my 3.2's headlights and turn indicators (all inop) - I have another thread started in the Mondial forum on this topic. Any advice on wiring issues that I can check? I have not played with the relays yet but that's on my list to do.
    Thanks,
    Vince
     
  12. mike32

    mike32 F1 Rookie

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    #12 mike32, Aug 2, 2019
    Check the earthing connections first
     
  13. ATSAaron

    ATSAaron Formula 3
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    #13 ATSAaron, Aug 13, 2019
    DUDE! It was exactly that! Thanks.

    Working AC is almost more exciting than the 650 horsepower.

    Aaron
     
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  14. Frabello72

    Frabello72 Rookie

    Jun 24, 2017
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    #14 Frabello72, Aug 25, 2019
    Excellent! Happy to know! Now....have good fun with 650 hp.....
     

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