intermitant electrical failure

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intermitant electrical failure

Post by johnboy330 on Sun Aug 13, 2017 10:49 am

Hello - new member here - new to campervans after canal boat - love my duetto but i have a strange problem. The last few times i have tried to start the van everything shuts down no power anywhere them it all comes on again and everything is fine. Have checked all battery connections under the seat any idea what i should check next. Have thought it could be the sigma alarm or an isolator some where or a bad earth. The batteries are fully charged and the wiring seems to be in good condition


Last edited by johnboy330 on Sun Aug 13, 2017 10:59 am; edited 1 time in total (Reason for editing : more info)
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Re: intermitant electrical failure

Post by PLOUGHLIN on Sun Aug 13, 2017 11:51 am

Engine earth strap?

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Re: intermitant electrical failure

Post by -mojo- on Sun Aug 13, 2017 12:40 pm

I guess by "everything" you mean all of the lights on the dash and in the cab (i.e. the Ford part of the vehicle)? As above, or another likely culprit is the ignition switch.
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Re: intermitant electrical failure

Post by johnboy330 on Sun Aug 13, 2017 3:50 pm

Were would I find engine earth strap
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Re: intermitant electrical failure

Post by PLOUGHLIN on Sun Aug 13, 2017 4:31 pm

Sorry, can't help specifically. From engine or gearbox to a chassis rail, braided strap?

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Re: intermitant electrical failure

Post by RML on Mon Aug 14, 2017 1:41 pm

PLOUGHLIN wrote:Engine earth strap?

If as well suggested it's the earth strap then check your accelerator and c!itch cables as they can carry return current and quickly deteriorate or even melt.
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Re: intermitant electrical failure

Post by crosgor on Mon Aug 14, 2017 2:50 pm

It is a fairly common practice to fit an extra earth strap (quality battery lead will suffice) between the engine/gearbox and the vehicle chassis as they often fail without visible signs.
I have not got around to it yet so its bound to fail.
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Re: intermitant electrical failure

Post by johnboy330 on Thu Aug 17, 2017 1:19 pm

Thanks for all your great replies and I took it into a garage under warranty and luckily it lost power at the garage and it was quickly diagnosed as a badly fitted negative connection on the battery which looked OK but needed tapping down to get a good circuit. He said an earth strap fault would have failed more often but the bad connection would fail under pressure. I hope this is an end to the problem as the rest of the vehicle is excellent and so beautifully put together
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