scary experience

[darbuck]

Hi lads coming home thursday on the motorway when c5 decided it was good time to shut down every system so no lights no power steering no engine nothing lasted about a minute then started up again hasnt stopped since but any ideas welcome all battery connections fine.No real indication of alternator failure either.

[SwissSPEC]

No idea, either battery problem or an electrical glitch. Had that in an AX diesel once, driving along & then it just turned off. Re-started & everything was fine, never had the problem repeat itself for the rest of the time i owned the car, v-strange. There is quite a lot about C5 batteries causing all manner of problems when they are on their last legs.

[chinkostu]

Check your earth leads on the battery and where they connect on the chassis and g'box. Normally positive leads will cause issues but full death is usually a naff earth. Had a saxo that did the same, was scary

[darbuck]

Checked earths and they seem fine battery is reading 13.6 so i presume that's ok the ac pulley screeches every once in a while plugged it in to lexia clone but nothing really recorded about power loss baffled

[SwissSPEC]

May just be a one off, or possibly a lose wire somewhere which caused a connection issue to the car's brain? Perhaps don't worry about it, unless it does it again, you could spend a fortune & never getting a diagnosis.

[Zelandeth]

Really sounds like a major electrical connection issue. My 306 did exactly the same a few years back (in the middle of the night in the middle of nowhere of course), and it turned out to be the engine to body earth strap that had dissolved.

I'd give all of those leads a really good wiggle around and see if you can replicate the fault. Mine had gone right at one end and wasn't at all visible - until the wire pulled clean out of the connector at one end.

Given earth straps are only a few quid might be worth sticking an extra one in place if that side of the system is at all suspect. Or at least grab one to add to the box of misc in the boot case you need it.

[addo]

I'd say Comms unit, or its power supply. Would be worth seeing if Lexia has any opinions.

[darbuck]

hi all
theres a few faults recurring, steering column control, airflow coherence too low,lighting control incoherence ,pre heat short circuit, brake pads worn although there disconnected and tied up.

[Hell Razor5543]

I recall when a forum members son had a problem with his van cutting out after going around a roundabout. This is that post;

http://www.frenchcarforum.co.uk/forum/v ... =3&t=42263" onclick="window.open(this.href);return false;

[darbuck]

Cheers hell razor unfortunately or fortunately nothing seems to be loose so I'll have to rethink thanks lads

[harryp]

Hi,
I'd also be inclined to remove and clean the earth mounting points?
Regards

[darbuck]

will do Harry cheers

[zs&tas]

Hey thats strange, just browsing and found this thread. My c5 did the same thing two weeks ago, in dual carriage rd works, no where to pull over. Just coasted, I think I had engine running (hdi) and powersteering but no display dials or power. I was just coasting pumpi g throttle and flicking the key round and Eventually it restarted and took off. Never done it before or since. It was a bit like someone hit me with emp. Very scary and strange. Im leaving it until something happens again. If it does then ill look.

[Stickyfinger]

Maybe ?

http://www.frenchcarforum.co.uk/forum/v ... 2&start=15" onclick="window.open(this.href);return false;

[zs&tas]

Dont want to hijack but thanks man handy stuff there, it has had a lumpy start recently but clears and runs fine. I think the maff has trouble in the cold too. But my shut down was when fully warmed up? Although I have had just today those sudden throw ya forward misses? . I was hoping just the maff again as I registered minus five degrees this morning. Where abouts are those seat wirings ? Im guna check the block earth too.