MERC 1996 75 HP BUZZING ALARM

[StWalkr2]

MY 75HP MERC JUST STARTED THIS BUZZING ALARM IN THE CONSOLE TODAY WHILE CRUSING @ 4800 RPM FOR ABOUT 20-25 MINUTES, ISHUT DOWN ENGINE & CK'D OIL LEVEL WAS FOUND 1/4 FULL.....REFILLED, BUT THE ALARM STILL SOUNDS.....NEW WATER PUMP WAS FUNCTIONING.....THIS IS A NEW MOTOR & BOAT TO ME....JUST LOOKING FOR AN ANSWER TO THIS ALARM BUZZING.....HOPE I HAVEN'T DAMAGED MY ENGINE AS I RAN IT ANOTHER 5 MNUTES TO THE DOCK

 

[Laddies]

Re: MERC 1996 75 HP BUZZING ALARM

IF the w/pump and popit valve are working properly then the heat sender unit on the engine is bad

 

[Trent]

Re: MERC 1996 75 HP BUZZING ALARM

Is the alarm going beep..beep..beep or one solid "tone" beeeeeeeeeeeeeeeeeeeeeep

 

[StWalkr2]

Re: MERC 1996 75 HP BUZZING ALARM

Originally posted by Trent:<br /> Is the alarm going beep..beep..beep or one solid "tone" beeeeeeeeeeeeeeeeeeeeeep

 

[StWalkr2]

Re: MERC 1996 75 HP BUZZING ALARM

It is one long beeeeeeeeeeeeeeeeeeeeeeeep....does this sound familiar?

 

[StWalkr2]

Re: MERC 1996 75 HP BUZZING ALARM

Originally posted by Laddies:<br /> IF the w/pump and popit valve are working properly then the heat sender unit on the engine is bad

 

[StWalkr2]

Re: MERC 1996 75 HP BUZZING ALARM

The water pump is new....less than 20 hrs.....and it was pumping....had steady stream of water coming out.....before & after alarm started sounding....that was the 1st thing I looked for.....as for popit valve....I know nothing of that.....what would cause this heat sneder to go out? Would long periods of 4900 rpm do that?<br />I was thinking more along the lines of the oiler resovoir being low......is there an alarm on that?

 

[andy6374]

Re: MERC 1996 75 HP BUZZING ALARM

the long beeeeeeeeeeep as you describe is the heat sender not oil. Before you replace the heat sender I would pull the poppit valve for inspection. It is usually located under the ignition plate on most motors. What's your serial # so I can check for sure.

 

[StWalkr2]

Re: MERC 1996 75 HP BUZZING ALARM

Originally posted by andy6374:<br /> the long beeeeeeeeeeep as you describe is the heat sender not oil. Before you replace the heat sender I would pull the poppit valve for inspection. It is usually located under the ignition plate on most motors. What's your serial # so I can check for sure.

 

[StWalkr2]

Re: MERC 1996 75 HP BUZZING ALARM

Thanks for the info.....I am out of town @ the moment, I'll try & get you the serial number soon.<br /><br />You seem very knowledgeable on this.....have you mechanical experience w/ these engines?<br /><br />I take it that the poppit is much more inexpensive fix than the heat sensor?<br /><br />Also, could the running of the motor for a prolonged period of time have caused this or was it just time for it to go out?

 

[StWalkr2]

Re: MERC 1996 75 HP BUZZING ALARM

OK......got some info.....correction too<br /><br />Mercury, year 1999, <br />Serial number <br />oT071759