Electrical Problem. 1994 Hymer B564, Fiat Ducato Base. (2 Viewers)

[navyowl]

Hello everyone. Hope someone has an answer or previous experience of this.
The last couple of time out in the van I have been driving along, once in the sun with the blower on and the other in the rain with the wipers on. The battery light comes on and I lose wipers, blower, radios and instruments. After about 10 to 20 seconds it all starts working again. This goes on for a couple of hours during the first journey from home, happening every 10 minutes or so but after that it doesn`t happen again.
My thought were an earth problem, a battery problem or an alternator.
Any ideas. Thanks

 

[scotjimland]

My thought were an earth problem, a battery problem or an alternator.

yes..

could also be a slack / slipping alternator belt

 

[navyowl]

Thanks Jim. That crossed my mind. I had the alternator belt replaced recently. However, if the alternator wasn't operating I should still get power to the instruments I thought. When the belt snapped I still had the gauges working.

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[scotjimland]

Thanks Jim. That crossed my mind. I had the alternator belt replaced recently. However, if the alternator wasn't operating I should still get power to the instruments I thought. When the belt snapped I still had the gauges working.

so it looks more like a poor earth on the engine, chassis or battery ..

that's where I would start... eliminate the easy cheap things to repair first

 

[WAG2CRU]

Given all the symptoms, I would firstly look closely at the battery neg terminal, then check the connections on the back of the alternator and then the ignition switch and its connections.

 

[Flamenca]

Do you have the Fiat wiring diagram? I can send you the diagram for the 1992-93 models if that will help.

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[navyowl]

Thanks for the answers. My feeling was that it would be an earth, I'll get on with it and see where I go. Thanks for the offer of a diagram Flamenca but I have one. It's in German but it's fun working out the different names for things.