deamon001

hay guys n gals after some advice regarding an alternator for a 2005 sti now iv had a second hand one from a bug eye now it's throwing up the an error code low charge voltage will the alternator work on my car or is there a problem with it I got 14 and a bit volts

alcazar

iTrader: (2)

I'm unsure about yours, (the 2005 car), but you may have got one of the so-called "smart" alternators, which only charge when they sense a load.

If your car hasn't this, it may throw the code.

deamon001

yes i believe it has so im guessing that the older version didn't have this any one know ?
because if this is true im going to have to get one of same year

alcazar

iTrader: (2)

I think all newage cars have it, afaik it came in with the bugeye?

Are you certain the new alternator is working?
What about your battery?
Not possible to have left a wire off?

deamon001

battery is fine all wires back on correct only thing in question is the alternator so I'll send it back and get another one

deamon001

all sorted had the bearings changed on my original alternator cost of £30
but broke my light weight pulley doing so

alcazar

iTrader: (2)

My classic had the same done about 5 years ago, £25. TBH, there's not much else to wear on modern alternators.

The Rig

iTrader: (13)

Going to hijack this thread lol, just about to have my classic Alternator refurbed as its throwing up the battery not charging warning light on the dash as well as the known handbrake light on at the same time.

took to an alt specialist and he replaced brushes as a simple measure but made no difference on his workbench, so it looks like the regualor and rectifier/diode pack are to be replaced, he reckons all in around £75-£80 for the whole job, considering pattern parts are £85 and original alts are couple hundred quid, ive opted for a refurb as i want to keep the genuine lat in place.

he tested bearing and the split ring etc, all those were good, considering it had done 100k tho, the brushes were really low and its the original alt !

one weird thing tho, when the alt wasnt working (charge light on) idle was 1500 and wouldnt lower, hoping that sorts itself out when alt is back on lol

cheers