[C320-list] Tach running high

[surprise thompson87.com]

Which engine?  On some the tach signal does not originate at the alternator but rather at a flywheel sensor. 

> On May 30, 2024, at 5:10 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