2004 2+2 125hp ELPTO 2 stroke CONSTANT ALARM

[themish]

I was underway at full throttle after leaving the no-wake, when suddenly a constant alarm tone came on. Shut down, filled with 2 stroke oil, but the alarm continued when the key was in the ON position with the motor off. I didn't see any smoking and it didnt seem like the motor was unusually hot, so I turned on the motor and powered home with the alarm blaring. The cooling outlet operated as normal with a good pressure stream that wasn't hot on the way home (about a 30 minute ride consisting of 10 min full throttle then 20 min no-wake).

I tried disconnecting what I believe the temp sender is, but the alarm still sounds in ON with motor OFF. That sender is I believe plugged into this port typically (sensor on my motor, but plugged in this image, tan cable):

That sender was replaced before last summer's season. I plugged that sender back in and the alarm still sounds in key ON with motor OFF.

I tried unplugging what I believe to be the oil sensor, the blue and green cables shown here:

Not sure if I need to jump these in order to bypass the oil sensor alarm. Oil level is at half tank. With these two cables disconnected, the alarm still is on with key ON and motor OFF.

I should note that recently it seems as though the 2-stroke oil consumption rate has decreased, but I have no data to back that up, just instinct. Any ideas?
Thanks!

 

[Texasmark]

In your first picture, you circled a 1/8" NPT pipe plug covering a port where temperature monitoring equipment can be installed, like a thermostat which I use...dash mounted indicator, or water pressure which is popular, with dash indicator...has nothing to do with OT failure system.

The alarm is solid for over temp and alternates with oil failures if you have an OT module...my 2002 115 doesn't have a modulation module and when my magnet fell off in mytank, I just unplugged a wire and kept track of my oil level to shut the alarm off.

In your first picture, if you drop down below where your picture stops, on that flat plate (water jacket cover), about 3/4 the way down the left side you will see a screw, clamp and a tan wire. This is your OT sensor. Unplug that tan wire from where you unplugged the blue wires (will also be the tan wire bayonet connector) and see if your horn stops blowing.

Sounds to me like the OT sensor shorted out which is what it does if the engine block gets up to 196F (within a small tolerance). On the two blue wires, just disconnect one to open the oil fail circuit...series wired, but why don't you test your oil circuit.

Remove both blue wires in your second picture and with the engine in a vertical position, like when running, ohm out the oil loop. If your tank is over one quart full, engine vertical you should ohm an open circuit between the blue wires....if not, your magnet fell off and the loop is closed, grounding your warning horn....your ignition switch powers it with a purple or red/purple stripe wire.

Nice compression on your cylinders. I'm running 125 on a 2002 which is above min recommended by 5# and have no problem getting into the 5250 rev limiter. Great engine.

 

[themish]

Haha, yeah the engine runs great, even with the alarm! I messed around with the oil sender wires and found that disconnecting the sender causes the alarm to stop. Has to be the magnet. Any idea if the sender and the tank are separate parts? I did find the tank assembly part number as 828362a2 but its unclear if it comes with the jumpers necessary to plug into the alarm module.

 

[Texasmark]

Faztbullet responded to my post on the subject one day as I had just lost my magnet and he said that you either had to cut the tank in half and glue it back together or buy a new tank.......Since he is who he is, and does what he does, I took his word for it......so, my simplistic solution was what I said....matter of fact I was charging my batteries this afternoon thinking I might try to find an open ramp at a nearby lake (flooding problem) tomorrow and while there hooking up the batteries, I pulled out my dipstick and checked...yepper right on the half way mark...2 quarts.