1999 Johnson 115 Wrong Warning/Lights

[notbobj1]

I think either I have a bad tach or bad wiring from the factory...
The other day we were running in a no wake zone around 1200 rpm or so.
Warning horn comes on (constant alarm - no beeping) and the no oil light lights up...
Temp gauge reading around 130.
Shut off and restarted, alarm goes away.

Took it home and thought I would flush it out to make sure it wasn't dirt/sand etc... while flushing alarm comes on, no oil light.

The oil tank is 3/4. Hoses are fine. Pressure tests are fine.
Cleaned the oil sensor and tested, it is fine. Tested the VRO and it is getting both gas and oil fine.

I am going to replace the water pump as it has been a few years.
However, why am I getting a constant alarm and a no oil light. Should I not either get a beeping and no oil if it is an oil issue, or a constant and a hot alarm if it is overheating?? I am wondering if a wire was reversed somewhere or if it is a bad tach or ?? If it is incorrect wiring, what wires would I check to make sure they are going to the correct places?

 

[bob johnson]

Re: 1999 Johnson 115 Wrong Warning/Lights

the temp gauge comes off only onme head, but the alarm could be triggered by either head from the sensors.

Id check the other head , that doesnt have the temp sender in it, to make sure it isnt getting hot....

because of block water passages and a possible lean condition or other issue specific to one cylinder, you could have one side get hot while the other side is fine.

dissonnect the oil tank and run premixed gas from a temporary tank....

see what you get..


bob