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blowing main fuse

Discussion in 'XJ Technical Chat' started by cobra, Aug 12, 2010.

  1. cobra

    cobra Member

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    i keep blowing my main fuse.i can be sitting at idle and within 5 min blow main fuse.or can be riding for 20-30 min and blow main fuse. ive stripped all wiring conduit off harness and inspected all wires,seems no problems there.what could cause this.fuse block is in good clean shape.took apart ignition switch,all clean. can't find any shorts to ground.wtf?can anyone help on this?
     
    cobra, Aug 12, 2010
    #1
  2. Polock

    Polock Well-Known Member

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    30 amp fuse?
    is this a chevy or a ford ?
     
    Polock, Aug 22, 2010
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  3. mdee

    mdee Member

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    My XJ750RJ Seca 1982 has 30 amp main fuse - factory spec.
    (No, Polock, it’s not a Chevy or Ford :)
    Actually, Corba did not specify what size fuse ??

    So my questions to Cobra are…… what size fuse are you using and what size do you think it should be and why do you think it should be that size?
     
    mdee, Aug 22, 2010
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  4. Zookie400

    Zookie400 Active Member

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    i think polock would rather know what bike it is, not what fuse.

    cobra-
    what bike, year and model?
    what size fuse?

    until you fill in the blanks people cant really give you good advice, other than....you have a short somewhere.

    chaffed wires are a very common blown fuse cause. also, i often see corroded connections that have a parasitic draw and can cause a fuse to pop. usually fuses are rated for way more than the normal load on the circuit, so dont try to mask the real problem by putting in a bigger fuse.
     
    Zookie400, Aug 22, 2010
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  5. quikcobra

    quikcobra Member

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    There must be something in the system spiking. Time for a multimeter.
     
    quikcobra, Oct 1, 2010
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