I'd use my multimeter and see what voltage the alternator is actually
putting out.

Rob
vwrobb@gmail.com

On Mon, May 22, 2023 at 11:29 PM LarsP <olgreywoof@gmail.com> wrote:
>
> 87 Wolfsburg 2.1
>
> Have VDO gauges which are not all that precise anyway, but Volts usually show right around 13+.  On highway today, charging stayed above 14 most of the day.  What do I learn from that?  Frying an alternator?  Alternator frying the battery?  Battery depleted?
>
>
>
> Thanks,
>
> gp
>
>