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Electric fans not turning on

Discussion in 'Technical Q&A' started by 330GTCFERRARI, Jul 29, 2012.

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  1. 330GTCFERRARI

    330GTCFERRARI Karting

    Jun 21, 2012
    99
    NYC
    #1 330GTCFERRARI, Jul 29, 2012
    Hi I have a 330 gtc and my fansafter after market electrics. They stopped working and now they don't come on. I played with the fuses and they came back briefly, but now not at all. Bad sensor? Any help would be appreciated
     
  2. 2NA

    2NA F1 World Champ
    Consultant Owner Professional Ferrari Technician

    Dec 29, 2006
    18,221
    Twin Cities
    Full Name:
    Tim Keseluk
    #2 2NA, Jul 29, 2012
    Process of elimination, too many variables to hazard a guess here. Get a test light and find out where you have power and where you don't.
     
  3. 330GTCFERRARI

    330GTCFERRARI Karting

    Jun 21, 2012
    99
    NYC
    #3 330GTCFERRARI, Jul 29, 2012
    I know the fuse is working because it also runs the gauges which are working. The ans have power. They just don't turn on
     
  4. Colin Angell

    Colin Angell Karting

    Jun 17, 2004
    118
    #4 Colin Angell, Jul 30, 2012
    Hi

    I have a 365 GTC which has an identical arrangement. The circuit is fairly simple, so you should be able to fault find quite easily. You just need to be methodical and check everything in turn.
    You could start with the fans (very unlikely that they both fail together) by disconnecting the input power cables and running a cable to the positive side of the battery. They should come on straight away. If not leave that cable connected and check the earth is good.
    The thermostatic switch in the bottom of the radiator is easy to check. Just connect both sides of the switch together and the fans should come on. You can do this by pulling off both cables from the switch and touching them together.
    I can't remember if there are one or two relays under the dash, but again very unlikely for both to fail. You can check them on the car with a 12 vollt test lamp. Is the power getting to the relay and when they are energised is there power going out? There are a number of other basic tests for relays and a very good article on understanding relays can be found on autoshop101.com.
    You should check the fuse and fuse carrier and you should check your wiring for continuity.
    I am sure if you do all that that you will find the fault.
     

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