Just filled up the fuel tank. Gauge says: fuel is empty. | FerrariChat
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Just filled up the fuel tank. Gauge says: fuel is empty.

Discussion in '360/430' started by 360Marnix, Sep 29, 2017.

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  1. 360Marnix

    360Marnix Formula Junior

    Jan 4, 2017
    491
    Holland
    #1 360Marnix, Sep 29, 2017
    Last sunday I drove away my 360.
    When I first started the car, the fuel gauge showed there was about 1/4 fuel left.
    After about 20 miles I parked the car. Half a hour later I started the car again and the fuel gauge showed an empty tank and the fuel light was on.

    I filled up the tank, complete, but the gauge still shows: empty tank.
    I drove about 80 miles and it still shows: empty tank.

    Does somebody knows what is wrong? A problem with the sender unit or could it be something else?

    Thanks in advance!
     
  2. vrsurgeon

    vrsurgeon F1 World Champ
    Silver Subscribed

    Dec 13, 2009
    16,438
    Charleston, SC
    Full Name:
    Curt
    #2 vrsurgeon, Sep 29, 2017
    Sender unit most likely cause, arm is jammed or stuck. Less likely but still possible is the gauge cluster or wiring like ground or loom. Can't tell over the internet..

    You could try taking engine panel off and reinserting the connector on the drivers side tank.. maybe test resistance on pins 1 and 2 of the connector.
     
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  3. whatheheck

    whatheheck F1 Rookie
    Owner

    Mar 27, 2006
    4,148
    Seattle, Wa
    Full Name:
    Dan L.
    #3 whatheheck, Sep 29, 2017
    I agree, most likely fuel leve sensor is stuck or going bad.

    Here you go from the workshop manual. Please see attached.

    Hope that helps.

    Dan
     

    Attached Files:

  4. 360Marnix

    360Marnix Formula Junior

    Jan 4, 2017
    491
    Holland
    #4 360Marnix, Sep 29, 2017
    Thanks guys, I will start with checking the resistance and check the connectors.
     
  5. zstyle

    zstyle Formula Junior

    Jun 28, 2007
    549
    Fountain Hills
    Full Name:
    Jon
    #5 zstyle, Oct 2, 2017
    If you need to service the driver side pump (with fuel sending unit), you will need a custom or large wrench to twist the plastic nut. Be careful when removing the pump. Installing the pump needs to be orientated correctly so the arm does not grind against inside of tank. It is best if you do not have a full tank of fuel.
     
    360Marnix likes this.
  6. MotoMeccanica

    MotoMeccanica Formula Junior
    Silver Subscribed

    Aug 21, 2006
    448
    Calgary Alberta
    #6 MotoMeccanica, Oct 3, 2017
    This happens on my 456 periodically, it soon corrects itself, I just blame it on age.
     
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  7. phil the brit

    phil the brit Formula 3

    Jul 7, 2013
    1,215
    Colchester+Clermont
    Full Name:
    Phil Taylor
    #7 phil the brit, Oct 3, 2017
    Happens on my 430. Fill up and it can take quite a few miles to register that it is now full. Sometimes it registers immediately.
    Don't worry about it, Ferrari electrics.
     

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