F430 spider 2008 - Radiator fan question | FerrariChat
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F430 spider 2008 - Radiator fan question

Discussion in '360/430' started by Bedrari, Sep 28, 2025 at 3:45 PM.

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  1. Bedrari

    Bedrari Karting
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    #1 Bedrari, Sep 28, 2025 at 3:45 PM
    Hi guys,

    The radiator fan goes on and off very frequently when the car is on, doesnt matter if the car is cold or warm. Is this a f430 thing?
     
  2. LorenzoR

    LorenzoR F1 Rookie
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    #2 LorenzoR, Sep 28, 2025 at 3:47 PM
    How often, it could be the resistor
     
  3. flash32

    flash32 F1 Veteran

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    #3 flash32, Sep 28, 2025 at 3:58 PM
    Which side ..is a/c on ?
     
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  4. Qavion

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    #4 Qavion, Sep 28, 2025 at 4:10 PM
    Which one?

    Do you mean the thermoswitch on the radiator interconnecting pipes? If one of the resistors on the fans failed (open), the fan would come on at a higher temperature. The resistors are for basically reducing fan speed. Low trigger temperature = low speed.

    Aircon gas pressures can also turn on the fans. AC working hard (or faulty switches seeing high compressor pressures when there isn't) puts on the fans. Perhaps there is an issue with those switches? When the fans come on when you don't think they should, does turning off the A/C immediately stop them?
     
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  5. LorenzoR

    LorenzoR F1 Rookie
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    #5 LorenzoR, Sep 28, 2025 at 4:20 PM
    Yes, I think we're talking about the same thing. my maserati did the same thing his is doing. there was a blister in the coil of the resistor or thermoswitch and it caused my fans to go off and on. i'm not sure why I called it a resistor but I think your terminology is more correct
     
  6. Bedrari

    Bedrari Karting
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    #6 Bedrari, Sep 28, 2025 at 4:24 PM
    Thanks for the reply guys, ill listen more carefully on tuesday when i will use the car again. Not sure exactly how its acting in regards to which side or if AC is on/off, ill update you to get further guidance
     
  7. flash32

    flash32 F1 Veteran

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    #7 flash32, Sep 28, 2025 at 4:32 PM
    My bet is A/c is on and you are hearing the condenser fan
     
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  8. Qavion

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    #8 Qavion, Sep 28, 2025 at 4:58 PM
    Last edited: Sep 28, 2025 at 5:04 PM
    Ah.. I see what you mean. You are correct in this case. If the resistor is breaking down (intermittently), it would make low speed fan operation cut in and out. i.e. not turn off because the temperatures were going down, but simply because the resistor temporarily went open circuit.

    You were actually referring to the resistor...

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    (Thanks for the photo)

    I was referring to the blue thermoswitches

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    Since there are two resistors on the F430, you'd need to know which fan was coming on.
     
  9. LorenzoR

    LorenzoR F1 Rookie
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    #9 LorenzoR, Sep 28, 2025 at 5:38 PM
    That's correct.. I would just check both easy enough
     

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