Alternator light??

This is the Forum for all your Citroen Technical Questions, Problems or Advice.

Moderator: RichardW

Post Reply
howie
Posts: 2
Joined: 06 Dec 2003, 22:03
Location: United Kingdom
My Cars:

Alternator light??

Post by howie »

My Xantia HDI 2000W alternator light flickers every now and then from a cold start up[:(!] I've not had chance to check the voltage it's kicking out, but I'll give it a check tomorrow. Any ideas as to what the most probable cause is likely to be ie diode pack?
Thanks
jeremy
Posts: 3959
Joined: 20 Oct 2002, 16:00
Location: Hampshire, UK
My Cars:
x 2

Post by jeremy »

Sounds like diodes to me. Could be zenner I suppose but probably doesn't make much difference as if you are intending to replace the control unit it will all come as one.
If you put a meter in it the voltage will be severely down if it is the diode - about 10 or 11 volts. You will probably find the indicators and the wipers are slow and the lights are dim.
I had the opposite and the zenner went (I think) - result the wipers went beserk and the lights improved dramatically. I'd have left it if it wasn't making the battery gas furiously and spread acid everywhere.
jeremy
wrinklet1
Posts: 706
Joined: 23 Nov 2002, 19:15
Location: Bolton, England
My Cars:

Post by wrinklet1 »

Check that the small wire that goes to the alternator is powering up. An alternator needs a 12volt supply to work, if not it won't recharge the battery
Post Reply