Mercury 150 Oil Alarm BEEP BEEP BEEP
Posted: Sun Jul 29, 2018 4:18 pm
Hi. I am looking at potentially pulling off the oil injection system on a 1987 Mercury 150. I have a constant BEEP-BEEP-BEEP aural alert indicating an oil alarm.
The engine is running fine,and the oil pump is pumping oil for sure; I can see the oil in clear tube from pump to oil gas mixing block.
I checked the oil cap float level [switch], and it was okay as measured with ohm meter; the oil reservoir was full.
I checked the voltage (on a white wire: a solid 11.5-Volts, although this seems low.
I checked the oil pump sensor (white/blue wire to ground): 4.5-VDC, but as I rotated the engine more than two revolutions it never dropped to around 1-VDC and always remained at 4.5-VDC.
Today I fired up the engine, convinced it has oil and it has blue oil indicative of oil burning.
I pulled off the green/wire from the number-4 cylinder switch pack coil connection that goes to the oil alarm and the BEEP BEEP BEEP stopped.
I was thinking that I might have found the [cause of the alarm] but with no coil wire going to the oil alarm module, it seems like the alarm doesnt work. I pulled the oil reservoir oil cap off and this didnt trigger an alarm.
I would rather keep the oil injection but at this point I am not sure what to do.
Does pulling the green wire from switch pack to oil module completely turn off the oil alarm module?
Should the oil cap alarm still work then?
The engine is running fine,and the oil pump is pumping oil for sure; I can see the oil in clear tube from pump to oil gas mixing block.
I checked the oil cap float level [switch], and it was okay as measured with ohm meter; the oil reservoir was full.
I checked the voltage (on a white wire: a solid 11.5-Volts, although this seems low.
I checked the oil pump sensor (white/blue wire to ground): 4.5-VDC, but as I rotated the engine more than two revolutions it never dropped to around 1-VDC and always remained at 4.5-VDC.
Today I fired up the engine, convinced it has oil and it has blue oil indicative of oil burning.
I pulled off the green/wire from the number-4 cylinder switch pack coil connection that goes to the oil alarm and the BEEP BEEP BEEP stopped.
I was thinking that I might have found the [cause of the alarm] but with no coil wire going to the oil alarm module, it seems like the alarm doesnt work. I pulled the oil reservoir oil cap off and this didnt trigger an alarm.
I would rather keep the oil injection but at this point I am not sure what to do.
Does pulling the green wire from switch pack to oil module completely turn off the oil alarm module?
Should the oil cap alarm still work then?