V6 Vy not charging

[Jeff6]

Hi all , I have a 2002 vy v6 , that Doesn’t seem to be charging the battery, but battery light is not showing ( but battery light it working with key in ignition before starting)

any ideas what this could be , or should I just replace alternator and go from there ?

thanks

 

[krusing]

Most likely the Regulator,
Common as a Lion on a Commodore.

Could change the alternator, but an expensive option, that also depends where you get it from.
"NEW" Regulators on ebay for $35 > $40.
https://www.ebay.com.au/itm/Voltage...607538?hash=item48e6aaeff2:g:C3UAAOSwJJJe2xcb

Most likely a RE72 Alternator

Or

if your handy with a soldering iron, you could fix it for $8.
https://www.ebay.com.au/itm/Bosch-A...104720?hash=item3b40da15d0:g:o2gAAOSwzrZedt7C

 

[Jeff6]

Thanks for the reply , have checked with a multimeter and the fault is intermittent, sometimes it reads 12 others 14 , so will give a new regulator a go

 

[krusing]

Thanks for the reply , have checked with a multimeter and the fault is intermittent, sometimes it reads 12 others 14 , so will give a new regulator a go

It should read a consistent 14.2 > 14.4 Volts [approx.] when idling,
When you switch your headlights on, it will drop to 14.2V,
but change to 14.4V to compensate for the voltage drop with the load.