Vehicle & Technical > Discovery

alternator not charging

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mattyme:
if the rev counter is reading zero its not getting the right signal.
it could be a case of trial and error by connecting the 2 wires to different connections on the alternator.
just to clarify.... you had a volt meter between the battery pos and neg and only showed battery voltage with the engine running. is that right?

i have the same trouble with my 200tdi, i have a diode split charge box but if i wire it up correctly the battery warning light comes on even tho its charging well. its to do with the diode im told!!

mobi:
just to clarify this is the second alternator or third! i changed it about 18 months ago and all was fine and put another new one on when the problem started, i thought it was a faulty new alternator so got it replaced and i still got the same problem. to clarify these are new oem parts not britpart.
the problem first started when i took it though a puddle (the puddle was up to the windows and very muddy) about an hour after the rev counter stopped working and the batt light came on but if rev up to 4000rpm the light would go out, and stay out  for a while (about 10 mins) but now the light is staying on at all revs and still not charging.

ukmudmaster:
mobi, thats how I kill my alternators, fill them with mud/water and it gets them in the end !!!
Buy them from ebay at the right price (£5-10) and you always have a spare,
I just used my last one, so need to find another,
Dave

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