Hi guys newbie here please help I have a Fiat Ducato motorhome and when I am driving her she will cut out no warning just cut out and loses all power and stuck on the side of the road or middle lane of French motorway no warning no warning lights on dashboard everything is off wait a few minutes turn key and she will start off we go again and it will happen again later she is 2015 model I have asked around and no luck so far hope you guys have some ideas to what is going on thanks Rob
Technical Commercial
- Thread starter Stonner63
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Technical Commercial
Communicator
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Hi Stonner63,
Welcome to the forum.
I may not be able to help directly, but a few more details will help.
1. Please state which engine you have.
2. When you say that "eveything is off", do you mean that the vehicle is electrically dead, and that not even for instance the horn and hazard lights will function?
Welcome to the forum.
I may not be able to help directly, but a few more details will help.
1. Please state which engine you have.
2. When you say that "eveything is off", do you mean that the vehicle is electrically dead, and that not even for instance the horn and hazard lights will function?
Hi thank you for your quick response it has a 2.2L diesel and the Hazard lights do work when it has lost all electric power as I said you sit there panicking turning the key on and off then it will start as if nothing has happened
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As I do not hold full wiring details for the x250/x290 models, I will have to make a few assumptions, which others may be able to correct.
Your problem appears to be electrical, in order to eliminate the main power supply to the ECU, I think that checking the horn operation will prove that supplies are present at the engine bay fusebox B001, via which the ECU is supplied.
If horn does not sound, then problems could be with the fusbox itself. (See current meltdown thread.) Also suspect would be the 150 mega fuse on top of the battery.
If the horn works, then the ECU, or an associated relay becomes suspect. What may be possible is that the ECU has developed a micro crack which opens when the ECU gets warmer than usual, and then you have to wait for it to cool down before the connection is remade. (I have experienced this on a washing machine, which stopped at random points in its cycle. Also on a TV.)
If you have a code reader, are there any faults recorded, particularly on the ECU?
Perhaps another forum member has an alternative explanation
I would have suggested the crank shaft position sensor , but OP says it starts straight away? In the past I found they needed ten minutes or so to cool down.
Also I believe a Forum Member has mentioned if crank sensor fault the rev counter will not react when turning starter?
Also I believe a Forum Member has mentioned if crank sensor fault the rev counter will not react when turning starter?
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No, I think that the crank sensor could be very relevant, but with further thought, as I understand that the engine does not crank hence more likely to be a supply issue rather than ECU or sensor.
This is a forum, hence constructive comments invited.
Thanks guys very much appreciated I will look into your suggestions thanks for replying Rob
Basic advice: check electrical connections! For loose connections and / or rusted terminals. Battery, ECU, fuse boxes, ground points.
What's the voltage of the starter battery just after the van stalls?
What's the voltage of the starter battery just after the van stalls?
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