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Mondial QV Ignition light / Alternator light dims when cranking and will not start

Discussion in 'Mondial' started by Anthony bentley, Mar 5, 2020.

  1. Anthony bentley

    Anthony bentley Formula Junior

    May 20, 2006
    428
    London
    Full Name:
    Anthony Bentley
    Intermittent problem, Ignition light / Alternator light dims when cranking and will not start. If it doesn't dim it starts. Help.
     
  2. mike32

    mike32 Formula 3

    May 13, 2016
    2,430
    Uk
    Multi meter onto the battery and see how far the volts drop when starting, should be min of 10.5 volts
     
  3. Anthony bentley

    Anthony bentley Formula Junior

    May 20, 2006
    428
    London
    Full Name:
    Anthony Bentley
    Tested 10.9 volts.
     
  4. mike32

    mike32 Formula 3

    May 13, 2016
    2,430
    Uk
    Better than i was expecting. Sounds like battery is in reasonable nick.
    Have a look at the starter solenoid and see what the resistance is over the terminals.
    Sounds like you are getting 2 different loads when starting, one is pulling the volts down and not starting.
    Starter or its solenoid ? I had a repair kit fitted to my starter motor , no idea if still available
     
  5. Anthony bentley

    Anthony bentley Formula Junior

    May 20, 2006
    428
    London
    Full Name:
    Anthony Bentley
    The voltage drop seems to be on the spark side with the starter cranking like it should.
     
  6. spicedriver

    spicedriver Formula 3

    Feb 1, 2011
    1,738
    You could check for 12V @ the ignition modules.
     
  7. mike32

    mike32 Formula 3

    May 13, 2016
    2,430
    Uk
    The key switch should have 2 yellow wires, one goes to the coil supply and the other goes to the ignition module i think, if i remember correct this is in the rear passenger wheel well with a multipin plug. Can send u the wiring dia if you need it
     
  8. Anthony bentley

    Anthony bentley Formula Junior

    May 20, 2006
    428
    London
    Full Name:
    Anthony Bentley
    Yes please, I presume it is something upstream a main feed as it effects both banks, I know it would start and run on one bank if one was ok.
     
  9. Anthony bentley

    Anthony bentley Formula Junior

    May 20, 2006
    428
    London
    Full Name:
    Anthony Bentley
    Where are the main ground straps on the Mondial QV.
    thanks.
     
  10. mike32

    mike32 Formula 3

    May 13, 2016
    2,430
    Uk
    Looking at the fuse box, the bottom right relay is for the ignition switch, bosch 0332014113. Is this working.
    Try swap with relay “Q” middle row 4 in from the right. Same relay but for low beams
     
  11. mike32

    mike32 Formula 3

    May 13, 2016
    2,430
    Uk
    Off the battery as far as i know
     
  12. mike32

    mike32 Formula 3

    May 13, 2016
    2,430
    Uk
    Drop me an e mail address for wire diagram
     
  13. theunissenguido

    theunissenguido Formula 3
    Silver Subscribed Owner

    Jan 21, 2004
    1,490
    Argent/Brasil/Blgium
    Full Name:
    Guido
    #13 theunissenguido, Mar 7, 2020
    Last edited: Mar 7, 2020
    Main ground strap is between engine and chassis. Over chassis tubes to negative battery. Dont forget the main switch near the battery. They always gives problems of bad contact. Remove this or put an other that can be put directly on the negative pole.
    Some relais in the WSM and users manual are wrong put on the picture.
    This is how the relais have to be put ;
    https://www.ferrarichat.com/forum/threads/fuseboards-new.582139/page-2 see #29

    For better negative connections you can reed/do this :
    https://www.ferrarichat.com/forum/threads/sticky-mondial-8-qv-3-2-t-repair-thread.209843 see #3

    Guido
     
  14. Anthony bentley

    Anthony bentley Formula Junior

    May 20, 2006
    428
    London
    Full Name:
    Anthony Bentley
    Little update on this, working down chain, earthing out battery, checking battery switch, I have sprayed electrical contact cleaner down the ignition/ key barrel then some WD40 and it starts every time now. I am not sure if this is the fix or not but i’m happy!
     
    theunissenguido likes this.

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