Oil Warning Module

[walleye61252]

I have a 1992 100hp Merc. The oil and overheat warning horn in the control box has a constant but very low beep when I run above 3000 rpm. I tested the overheat sensor and the oil float switch and all seem fine. I wonder if I have a short in the wiring harness, horn circut or a bad module. Any help would be very appreciated.<br />Thanks

 

[Skinsk]

Re: Oil Warning Module

Maybe you're over heating.. Is it a constant beep, or a regular intermitten beep?<br /><br />If it's constant, it may be an overheat.. and I'd check that the poppet is opening first.<br /><br />Scott..

 

[The Marine Doctor]

Re: Oil Warning Module

Take and short one of the wires prior to the sensors. Listen for the alarm. See if it is the same as the one you normally hear.<br /><br />If it is indeed the same...then you have a problem that needs taking care of.<br /><br />TMD