Battery light on
 

As above, my battery light has started to come on with the engine running. Attached the multimeter to the battery which looks fine running just over 14v and then around 12v with the engine off. Belt looks okay to me but I'm no expert haha. Is there a tell tale sign of the alternator failing?

Thanks


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Tell tale sign ?????---Yes, the battery light.---:duh:



If you don't let it arc up by running it around you might just get away with changing the brushes.




Engine running 14.4 volts.

Engine off 12.6 volts.

If you have got over 14 volts at idle then the alternator sounds like it is doing what it should.

Could be a wiring fault - Chris had exactly the same problem here:

http://www.the75andztclub.co.uk/foru...d.php?t=203716

This happend to me on my old car same as above then my alternator packed in 2 weeks later dose the bty light go dim then bright when you switch things on and off
mine was reading the same as above too same 14 volts and me bty light keept going off and on then it just stayed on packed in tryed to push the dam car up an little bank to free wheel down home but it was inpossable to move stupid thing sat for 4 hours waiting for the rac too come out i tryed to push an 75 up an little tiny hill so i could free wheel down the big hill never ever ever ever again will i do that i sit in the car and wait for the rac lol

keep an bty pack charger in boot cos that what the rac man done put an charger on left the charger on and it fired back up and just got me home
half a mile from home down an hill and soon as i got just out side my door the charge was flat and me bty pack he put on was dead again

after that put an brand new alternator on the stupid thing and sold it had me beat that gold car now far i no the dam thing is running mint gerrrrrrrrrr lol

i say 110 percent its the alternator i even went out an bought an brand new bty and it drained that in few hours

Thanks for the replies fellas. I've ordered a new regulator from dmgrs today. Hopefully get it tomorrow in the meantime I've removed the current one. I don't think it looks too bad, but what do I know!! http://i202.photobucket.com/albums/a...t/IMG_2003.jpg


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Well the brushes have plenty of life left in them. Have you checked the wiring?

Thanks Mike, I checked the brown and yellow wire for chafing, but it all looked nice and secure. Battery terminals seemed secure enough. Not sure where else to look. There's not a lot of room to get in and have a look. I'm sure I've just read somewhere about a blown fuse bringing the charging light on. I'll check the fuses tomorrow.


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Fuse 36 on the earlier cars - I'm not sure about the later ones though.

Did the alternator slip rings on the armature look in good condition ?

Did those brushes you took out have free movement against the return springs ??

Make sure the wires connected to the alternator and battery have a good, clean, connection.

Thanks Jon