Ignition Dead On The Key

Discussion in 'Tech/Mech General' started by Wildbill, May 6, 2015.

  1. Wildbill

    Wildbill Funster

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    Just got back Frome Southampton van had no problems running sweet
    Parked the van up to unload it and it is dead as a dodo battery full charge all the lights in dash coming on but when I turn the key nothing
    thinking ignition switch US
    BILL
     
  2. Dawn B

    Dawn B Funster

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    Maybe it's tired after that journey :whistle:
     
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  3. Wildbill

    Wildbill Funster

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  4. pappajohn

    pappajohn Funster Life Member

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    Strange coincidence.....

    On friday last i had the same fault on my car.

    Pulled up at home then later tried to start....nowt, dead.

    After a few electrical checks it was the solenoid trigger wire at the starter motor.....poor connection.

    Cleaned it up and immediate start.

    Nothing to lose by pulling off the wire and refitting.

    If you are unsure which wire its the thin one, generally with a spade connector, and between the two heavy cables.
     
  5. Wildbill

    Wildbill Funster

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    There is no power from the cabal john had meter on it will turn over with a jumper cabal from battery
    BILL
     
  6. Bartyfixedit

    Bartyfixedit Funster

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    Same on my Ducato last week. Same fault, exciter wire damaged internally at the solenoid. No voltage showing on the solenoid but started after a wiggle. Conductors inside cable broken up.
     
  7. pappajohn

    pappajohn Funster Life Member

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    Sorry Bill, just realised it is yours.
    Is that the trigger wire or the battery to solenoid wire without power Bill..
     
  8. Wildbill

    Wildbill Funster

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    When key tuned no power to wire ?
    bill
     
  9. Wildbill

    Wildbill Funster

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    noting from trigger wire
    bill
     
  10. Ralph-n-Bev

    Ralph-n-Bev Funster

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    Same thing happened to a car of ours All lights on dash worked, as did electric windows. When they checked the solenoid , it was ok. Turns out it was the earth strap in the end.
     
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  11. rangitira

    rangitira Funster

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    Had a similar thing on the old G Reg. Someone on here (think it was ppj) said check the Earth Wire from the block to the Chassis
     
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  12. andy63

    andy63 Funster

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    If I've understood what I've read (and I often pick it up wrong lol) another vote for the main earth's. . block... hope you get it sorted bill.
    Ta andy
     
  13. Wildbill

    Wildbill Funster

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    looked at the earth and put jump leads but no joy will speak to my friend at the auto electrics place
    bill
     
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  14. Wildbill

    Wildbill Funster

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    looked at the earth and put jump leads but no joy will speak to my friend at the auto electrics place
    bill
     
  15. pappajohn

    pappajohn Funster Life Member

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    Bill checked for voltage at the starter solenoid using a meter so a bad/non existant earth would make no difference.
     
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  16. Wildbill

    Wildbill Funster

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    think solenoid could be US put livewire to solenoid spade nothing starter motor off tomorrow for testing
    bill
     
  17. Bartyfixedit

    Bartyfixedit Funster

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    I tested the voltage at the solenoid connection, nothing. I Bent the cable gently and there was a length of cable about 10mm from the connection where the cable bent easier due to the copper conductors having snapped within the sheaf. After that it started as I had made the conductors touch again by bending it.

    I cut off the end 50mm of cable and reconnected with a new terminal crimped on. That'll do for now but I shall replace that whole length of cable between loom and solenoid.

    Try starting it by putting a direct feed to the solenoid exciter terminal. If that starts it you can test the output from the ignition switch. If it turns out to be the ignition switch you have the choice of either replacement, or bypass the ignition switch starter terminals with a fused lead via a push button on the dash. Assuming the vehicle is reasonably modern it will only start with the key in the ignition due to the immobiliser.

    I am sure I don't need to say this but make sure the van is not in gear when testing things(y)
     
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  18. Bartyfixedit

    Bartyfixedit Funster

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    No voltage at spade AND won't turn over when direct feed suggests bad earth. When you tested the feed to the solenoid did you measure the voltage between the spade and the engine block, or the spade and the chassis?
     
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  19. Wildbill

    Wildbill Funster

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    didn't do that but off out to try bill
     
  20. pappajohn

    pappajohn Funster Life Member

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    In post #5 Bill says it WILL turn over if a jump lead is connected from battery to starter motor battery cable which eliminates a poor engine/chassis/starter earth.

    He also said in post #9 there is no voltage at the trigger/exciter wire....presumably when the key is turned.

    This all points to a faulty switch or a break in the exciter wire
     
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