Johnson oil tank alarm

[Ole Cajun]

my ‘05 Johnson 90 hp low oil alarm is giving a constant beep. I understand it’s supposed to beep ever 20 seconds. Can anyone offer info?

 

[Joe Reeves]

A constant steady beeping is a overheat warning. What makes you think it's the oil tank (low level) sensor?

 

[Ole Cajun]

I slowly pumped the oil out and when it got low the alarm came on; constant beep. Took the assembly out of the tank and worked the contact off and on; constant beep.

 

[Joe Reeves]

Strange happening...... Other than the oil tank developing a faulty sensor, I don't have a answer for that.

The early oil tanks emitted a beep every 20 seconds... then in the late 1990's (I think it was) that was changed to a beep every 40 seconds.

The constant steady beep has always been a overheat warning... and also for a fuel restriction via a vacuum switch for the higher hp engines so equipped.

 

[Crosbyman]

just wondering …

if the tank only has a single contact wouldn't the timing interval of the beep be done somewhere else in a cycling module

ex: cycling on/off for LOW oil & constant for overheat

is there just one beeper or two…………

…... one for heat (constant)

or a second one for low oil (cycling) ? but apparently defective in this case

 

[Ole Cajun]

I checked the over temp sensor on the heads. I grounded the alarm wire; constant beep also

 

[Joe Reeves]

There is but one (1) beeper (horn)... and one (1) TAN wire leading from that horn to the overheat sensor, the VRO pump circuitry, and the oil tank circuitry.

The overheat is engaged via a sensor at the cylinder head that grounds the circuit directly.

The oil tank float causes a connection to engage... BUT... that connection/circuit goes thru a electronic panel/circuit that results in a continuous 20 or 40 second delay before it connects to the horn.

Also... The VRO (Fuel/Oil pump) incorporates a circuitry whereas if a "No Oil" occurred, due to either a actual no oil or air in the oil line... the warning horn would beep every other second.

 

[Crosbyman]

So based on that info wouldn't the problem be in the circuitry cycling the intermittent beeps

we know the overheat works ok we know the common buzzer works ….must be the timing module

 

[Joe Reeves]

Yes... If a low oil tank level creates a constant steady beep, the oil tank circuit is faulty.

 

[Ole Cajun]

Where is the timing module located and what does it look like. I found a flat square box under my console with one multi wire plug in it could that be it?

 

[Joe Reeves]

Where is the timing module located and what does it look like. I found a flat square box under my console with one multi wire plug in it could that be it?

Am I speaking in a foreign language... or leaving words out, or are you just playing a game with me... or trying to? The electronic circuitry is inside the oil tank and the end of the wiring. If you really can't follow what I'm telling you, it would be in your best interests to obtain a service manual.

 

[racerone]

Post a picture of this square box.

 

[Ole Cajun]

Didn’t mean to get you riled up pal

 

[Ole Cajun]

Thanks for y’all help