A/C not working well - condenser fan intermittent | FerrariChat

A/C not working well - condenser fan intermittent

Discussion in '360/430' started by Jagbuff, Jul 4, 2018.

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

  1. Jagbuff

    Jagbuff Formula 3

    Jan 13, 2004
    2,267
    Site of US F1 Race!
    Full Name:
    Franck
    #1 Jagbuff, Jul 4, 2018
    Happy 4th of July everyone!

    Decided to take the CS out for a drive today (only 3rd time this year :( ) and had a rather uncomfortable experience as the A/C just wasn’t performing as it should especially in stop and go traffic. I checked the lo and hi pressures and they seem to be in the ball park (maybe a tad high), but I did notice that the A/C condenser fan is only running intermittently – like it turns on for about 5-10 secs every couple of minutes.

    My memory is failing me, isn’t it supposed to run continuously? Could the fan relay be going out?
    Thx for suggestions!
     
  2. 97 Spider

    97 Spider Formula 3
    Rossa Subscribed

    Dec 15, 2012
    2,241
    Texas
    Full Name:
    Brian
    #2 97 Spider, Jul 4, 2018
    No, it is not supposed to run continuously even when the ac is turned on, but you would think once triggered to turn on it would run more than a few seconds. That doesn’t seem right.
     
  3. GCalo

    GCalo F1 Veteran

    Sep 15, 2004
    7,645
    Northern California
    Full Name:
    Greg Calo
    #3 GCalo, Jul 5, 2018
    Your fan motor might be failing or the A/C control unit has gone bad

    Yes the fan should run continouosly
     
  4. HektikArab

    HektikArab Rookie
    BANNED

    Jul 4, 2018
    35
    Full Name:
    Samuel Allouche
    #4 HektikArab, Jul 7, 2018
    hey buddy sorry to contact you this way can you inbox me
     
  5. hessank

    hessank Formula 3
    Silver Subscribed

    Aug 8, 2005
    1,747
    Canada, Florida
    Full Name:
    Fred
    #5 hessank, Jul 8, 2018
    Is your AC compressor cycling in sync with the intermittently running fan?
    That would point to the Freon as read by the PS
     
  6. GCalo

    GCalo F1 Veteran

    Sep 15, 2004
    7,645
    Northern California
    Full Name:
    Greg Calo
    #6 GCalo, Jul 8, 2018
    Misunderstood your issue.

    Not evaporator fan but the condenser fan.
     
  7. Jagbuff

    Jagbuff Formula 3

    Jan 13, 2004
    2,267
    Site of US F1 Race!
    Full Name:
    Franck
    #7 Jagbuff, Jul 9, 2018
    A/C compressor in not cycling out, just the fan. It is noisy but still seems to function ok when it is triggered. Checked the following:
    Checked the Hi/Lo pressure and they are in the right range 13.5 to 2 bar when compressor on.
    The condenser is very hot so the system is operating.
    I pulled the boot cover to check the lines, the line to the condenser is very hot while the return is barely cool.
    I checked the relay R2 which controls the fan, it is energized so there is power going to the fan circuit though I presume the trinary switch/ECU controls on and off function.

    Not really sure where to go from here other than evacuating the system, replacing the receiver dryer and recharging the system? Any other thoughts?
     
  8. tbakowsky

    tbakowsky F1 World Champ
    Consultant Professional Ferrari Technician

    Sep 18, 2002
    19,387
    The Cold North
    Full Name:
    Tom
    #8 tbakowsky, Jul 9, 2018
    Your r134 level is low. Evac and recharge to proper weight..and check for leaks.
     
  9. Jagbuff

    Jagbuff Formula 3

    Jan 13, 2004
    2,267
    Site of US F1 Race!
    Full Name:
    Franck
    #9 Jagbuff, Jul 9, 2018
    Will do, probably time to replace the receiver dryer too!
    THX!
     

Share This Page