Audible Alarm

RinkerLife

Hello all, 

New season new problems!!!

I have developed an audible alarm on my 2003 Rinker FV 342.  It's strange.  There is no consistency to it.  When I start my motors I get the standard tone when you first turn the key on.  When I start my starboard motor I get a quick tone then it starts when I turn the key, the port motor does not.  My volt meters never get above 13 volts when the motors are running.  As I power attempt to get on plane the system drops to about 11 volts and I get an audile alarm which is sometime solid and sometimes not.  As I back down from about 3000 rpms on the motors the alarm quits sounding.  The rinse and repeat as I go up it does the same thing.  It is frustrating because all of my other gauges are spot on.  I have pulled my alternators and had them bench test and the are sold 14.2 volts.  I think my gauges are messed up but would that cause the alarm.

LaRea

So you ruled out the alternator ... check for loose or corroded connections at the battery isolator and the start battery.  Maybe the current from the alternator doesn't have a solid path to the engine.  You're getting enough current to run the engine at idle speed, but not higher RPMs.  

You probably have the usual Faria analog gauges, so a gauge problem would not cause an alarm.  

YYZRC

Isolator issue perhaps? 

captkevin

How old are your batteries?

RinkerLife

 Morning,

I had never even considered the isolator is there a way to test them?  The batteries are new this year so that h as been eliminated as a possible problem.

YYZRC

Try swapping the port and starboard alternator cables at the isolator. 

Grahamu

Have you checked your alternator belts for wear and tension?