Cooling fans not turning on. | FerrariChat

Cooling fans not turning on.

Discussion in '456/550/575' started by dencap, Aug 6, 2018.

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  1. dencap

    dencap Karting

    Sep 29, 2013
    127
    SF Bay Area, CA
    Full Name:
    Dennis Caponigro
    #1 dencap, Aug 6, 2018
    Looking for someone in the San Francisco Bay area that can trouble shoot and repair the cooling fans on my 1999 456M.

    I checked thermal switch, swapped relays, and fuses, all OK.

    i checked the fans with direct 12 volt feed, and both fans work properly.

    Thanks for any help provided.

    Dennis
     
  2. centerfireman

    centerfireman Formula Junior
    Silver Subscribed

    Feb 23, 2015
    374
    Roseville, CA
    #2 centerfireman, Aug 6, 2018
    I have had my 550 serviced at SF Motorsports (in San Rafael) for the last three years and have been very happy with their service. Doug, Jesse, et al, have been great to work with.
     
  3. dencap

    dencap Karting

    Sep 29, 2013
    127
    SF Bay Area, CA
    Full Name:
    Dennis Caponigro
    #3 dencap, Aug 6, 2018
    Thanks for the recommendation.
    Regards

    Dennis
     
  4. Jan456

    Jan456 Karting

    Oct 1, 2008
    145
    the Netherlands
    Full Name:
    Jan Scholte
    #4 Jan456, Aug 9, 2018
    I had the same problem for a while with my 456M. Root cause was a too low pressure in the AC system.

    regards, Jan
     
  5. F456M

    F456M F1 Rookie

    Jan 8, 2010
    3,665
    Oslo
    Full Name:
    Erik
    #5 F456M, Aug 9, 2018
    There is a separate ecu for the radiator cooling fans... might fail aswell.
     
  6. dencap

    dencap Karting

    Sep 29, 2013
    127
    SF Bay Area, CA
    Full Name:
    Dennis Caponigro
    #6 dencap, Aug 11, 2018
    F456M
    Do you know where it is located? I thought the fan control was embedded in the main ECU.

    Thanks for any information you can provide
    Dennis
     
  7. F456M

    F456M F1 Rookie

    Jan 8, 2010
    3,665
    Oslo
    Full Name:
    Erik
    #7 F456M, Aug 11, 2018
  8. tazandjan

    tazandjan Three Time F1 World Champ
    Lifetime Rossa Owner

    Jul 19, 2008
    38,075
    Clarksville, Tennessee
    Full Name:
    Terry H Phillips
    #8 tazandjan, Aug 11, 2018
    There should be two signals to start the fans, one for normal temperatures and another back-up at higher temps if the first is inop. Neither working is not a good sign
     

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