Driving home last night (only a short trip of about 12 miles) and as i got
into the city centre where i live when i was pulling up to a junction so
dipped clutch. Battery light came on.
it goes off when you rev it past about 2k and then stays off for a while.
it'll come on when ticking over (but not all the time)
sometimes it flickers sometimes its not on at all.
Just after a few ideas where to start
is it likely to be the belt or soemthing in the alternator itself.
I've also noticed that when i start the car from cold at night everythi9ng
seems to be low power for a good 10 minutes.
ie the lights are much dimmer the blower isn't as fast. This is on their
own. i am not putting everything on all at once.
Then as if by magic half way up the A38 it seems to kick in properly. Theres
a noticable difference in the dashboards lights for a start and being able
to see the road is always helpful.
Could this be related.
sounds like new battery required ...
you could probably do worse than KwikFit for this one - both diagnosis and
And remember to ask for 20% off to "match an online price you've seen" ...
they will do it!
New Michelins on my xantia recently - £76 book price at Kwikfit - £56 actual
price just for asking!
all the best
No it shouldn't be but... You could put a voltmeter on it and then put the
lights on with the engine off. A good battery will keep the voltage up at
about 12 V for some time. With the engine on the voltage should rise aiming
for about 14V.
but 13.6v with engine off
i know batteries aint gonna be 12v exactly but...13.6..
confirmed with different meters :)
charge Lights on all the time now.
Battery light is dim with just ignition on. other lights are normal.
NO trouble starting car.
sometimes with a hard rev the light will go off (4k+) for a few seconds or
so. and comes back on (again very dim after its been ticking over a few
Had to drive it 38 miles this evening whilst dark. bit concerned.
didn't prove to be a problem
been out this evening. started first turn. (no struggling)
lights on dim tho.
13.6 is ok and it's keeping the lights on so it's not your battery. Try
earthing as someone else suggested. Don't just check the battery earth,
try engine earthing etc, although a bad engine earth would probably
mean bad starting (he muttered, thinking aloud).
Could it be one of the tensioners on the belt. it clears it self up above
about 3200rpm or so (thinking maybe below this speed the tensioner is having
thanks for all the advice. i'll try a few things and keep asking questions
I have a nifty gadget that plugs into the cigar-lighter socket and gives a
rough idea of battery and charging 'conditions'. It was quite cheap in
Halfords or some such place several years ago.
So, newish battery, unlikely to be that. Sounds as if you ought to get the
charging system checked. Have you checked the alternator belt? Can you hear
a squeal when you first start up? That would be belt slip.
Otherwise it could be part of the alternator, on an older model the brushes
could be on their way out. They are replaceable, but on many alternators you
get the voltage regulator as well, though that eliminates another
You say that everything is dim when first starting from cold (at night). A
good alterator should increase the brightness of the lights even on an older
battery which is not in its prime. Get the system checked out. Most battery
places will do it, particularly the place you bought the recent battery
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