[C320-list] Tach running high

[Jeff Smith]

I don’t know if this helps, but my non-functioning tach was the first sign
that my alternator was going bad/was bad. Or, I should say, first sign I
noticed. Since we were day sailing a lot, we were not relying on the alt to
charge the batteries. It wasn’t until we stayed overnight in the hook that
we realized the alt was not charging (hot swapped a starting battery from
another boat to get us started and home).

You may check voltage from the back of the alt to see if it is charging. I
would expect no reading if the alt is bad,  but I have been wrong many
times before.

FWIW,
Jeff
#121

On Thu, May 30, 2024 at 5:09 PM Michael Leschisin via C320-list <
c320-list at lists.catalina320.com> wrote:

> Hey all,
>
> I splashed the boat a couple of weeks ago and noticed that the tachometer
> is reading a consistent 2000rpm at idle.  The engine sounds the same so I
> don’t believe the actual idle speed has changed,  just the tach.  I know
> there have been some threads in the past regarding the signal being sent
> from the alternator but has any one had a similar issue and any advise on
> where to start troubleshooting the problem?
>
> Thanks,
>
> Michael Leschisin
> Wild Blue Yonder
> C320 995