Constant Alarm

powderhoundbrr

Seaman Apprentice
Joined
Jul 6, 2009
Messages
33
1992 Mercury Black Max 135

Getting a constant beep beep beep after the warning alarm when I am trying to start the boat. Oil level is good, boat is cold so no overheating problem.

I am thinking a sensor failure somewhere. Anyone have any idea what to check?
 

Texasmark

Supreme Mariner
Joined
Dec 20, 2005
Messages
14,544
Re: Constant Alarm

If like others OT is either the tan or tan with a light blue stripe. Oil is light blue, 2 wires. Disconnect and go from there.

Got more questions ask.

Mark
 

rb608

Recruit
Joined
Aug 18, 2013
Messages
4
Re: Constant Alarm

thanks ,Mark I have the same situation. I think I have located sensor by spark plugs, it has a pigtail connection, and I will disconnect that and see if alarm stops. How hard is it to change that sensor? could it be rusted or corroded in? it looks like a 1/4 inch fitting. Thanks for the info.
 
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