Engine Alarm 1992 merc 150 beep beep HELP???

fishpro1

Recruit
Joined
Jul 20, 2007
Messages
4
Hi I am new here my name is George.
I have a 1992 Merc 150xl outboard the oil alarm goes on and stays on when the motor is running. It is a beep beep it is not a steady beep. It does not beep until the motor is running. I turn the key to on it beeps twice and when i start the motor is keeps beeping. I have oil in the big tank and the little tank on the motor. I checked the float in the small tank its free. With the motor running I hold the float down and the beeps go away if I pick it up it starts beeping. Is there a float in the big tank also. I changed the alarm near the key switch and it still beeps. I also think I am overcharging I put a meter on the battery with the motor running is goes past 15 volts. my tach is going crazy also most likey form the over charging. I dont know what to do. could it be that the overcharging shorted out thr sending module. Thanks in advance for your help.
 

jebeebe

Petty Officer 1st Class
Joined
Nov 26, 2006
Messages
322
Re: Engine Alarm 1992 merc 150 beep beep HELP???

Is the oil in the little tank full to the top? My xr4 would beep if there was a little air pocket at the top. Top it off and it would quit.
 

gss036

Commander
Joined
Jan 18, 2003
Messages
2,914
Re: Engine Alarm 1992 merc 150 beep beep HELP???

Is this the type of float that has the magnet glued on the bottom? I have heard of them falling off,If so, may when you hold it down it get a reading. There should be 2 wires coming out of the top, trace them back to the bayonet connections and unplug the positive side, probably blue. If the beeping stops I would think you have a bad float.
I have a 1989 and the float is doughnut shaped around the probe.
As for a float in the main boat tank, I don't know, some of the newer ones have them. Is there a couple of wires leading out on it? Is so, one will go to ground and the other to an alarm.
 

fishpro1

Recruit
Joined
Jul 20, 2007
Messages
4
Re: Engine Alarm 1992 merc 150 beep beep HELP???

Thanks guys. The tank is full. If I hold the float down the alarm stops beeping. If I bring it up it starts beeping.
 

gss036

Commander
Joined
Jan 18, 2003
Messages
2,914
Re: Engine Alarm 1992 merc 150 beep beep HELP???

HELLO! Did you check for the magnet?
 

fishpro1

Recruit
Joined
Jul 20, 2007
Messages
4
Re: Engine Alarm 1992 merc 150 beep beep HELP???

Is the magnet om the top or bottom of the float.
on the top there in something thet looks like a washer is that the magnet.
 
Top