1999 mercury 175 efi S# 0g944201

[lifetime1962]

Need to find a 2-stroke mechanic, NC or SC close to me.
, alarm goes beep,beep,beeps, new water pump, now doing what is designed to do. checked thermostats and they are good, I am at a loss of what to do, I saw where 3 possible causes could be , 1 have check fuel separator , I changed it yesterday, 2 water in the VST tank , going to do that today , 3 is to check the oil pump , not quite sure on how to do that but I am going to check what I can , now it does have a used ECM from a 200 and it been jam up , I have been dealing with this for the past 3 weeks and physically not able to do a lot now.
thanks ahead of time.

[Fishing Addict]

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[leonreno]

^That’s your answer.

[JOE54]

yep

[PS89]

If your alarm is several (3-4?) distinct beeps at periodic intervals (once every minute or so), that isn't a temperature alarm, it's an oil level alarm. Comes from the float switch in the oil tank not sensing a full reservoir. Just went through that this spring as the wires coming out of the cap finally failed after 25 years. A new cap with float switch fixed that problem. Had to manually top off the reservoir to complete the repair.

An over-temp fault is a hard, continuous alarm.

[JOE54]

^^^^^ solid tone overheat

[lifetime1962]

I have checked the oiler drive shaft, and it is turning, how often does that sensor go bad for the oiler, I know I should go ahead and buy another motor, but funds are not there. I can take out the sensor and it don't beep at all, but a soon as I reinstall it, alarms beeps.

[EuropeanAM]

They do sometimes fail. New sensor should come with the bearing/magnet- be sure to install the NEW one with the sensor.

[JOE54]

+1 replaced several motion sensors