Battery Light

[Cheggs]

Hello,
         the battery light is on, on my 200tdi but only when the ignition is off does any one have a clue what it could be?the battery isn't flat and the battery light goes off when the engine is running - Keith

[Guardian.]

no, sorry.

[beast5680]

would suspect the diode pack in the alternator is on its way out

[Range Rover Blues]

He's right it's the diodes, one has gone and it's letting battery power back through the field coils, flattening your battery.  New parts is the answer

[Cheggs]

is that a New alternator or is it possible to replace the diode pack?

[Range Rover Blues]

If you can get the parts you can DIY, I had mine replaced by a local company.  That said I killed it agin and had it fully reconn'd but no, you shouldn't need a new one if bits can be found.

[dazzawhipple]

There cheap enough to replace the whole Alternator

My diodes went replaced then went again so new alternator was purchased

Darren

[Cheggs]

Well due to the fact that the wifes 306 is currently dead, I had to go for the quick fix and bought a new alternator, Though I will probabley try fixing the old one as a spare is always useful, prior to this happening the rev counter used to stop working ocassionally isn't also a sign of a faulty alternator?

[Range Rover Blues]

Yes, IIRC the rev counter works on one phase of the alternator, so it's been living on borrowed time.

[Cheggs]

SWMBO just called me at work, the battery light is now coming on when the engine is running, so i take it that means the battery is stuffed or the new alternator isn't doing its job, I shall have to check when I get I should be getting about 14.4v from the alternator shouldn't I :(

[Cheggs]

:D the alternator belt had snapped its amazing how swmbo couldn't tell me if the rev counter was working, which it wasn't so i poppped the bonnet and discovered the belt was in bits. Never mind i changed for a new one :D the only question left now is why do things only go wrong when there is a snow storm.