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 Mercury 50 HP 2 stroke issue		  New Topic  Reply to Topic
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fishtales
Captain

632 Posts
Posted - 05/24/2012 :  10:11:28 PM  Show Profile  Visit fishtales's Homepage Send fishtales a Private Message  Reply with Quote
Have a Merc 50HP 2 stroke that is running smoothly and peeing water just fine. However, when running an alarm keeps going off. Plenty of oil in resevior. Any ideas what is going on?

xxmadfirexx
Senior Member



565 Posts
Posted - 05/24/2012 :  10:38:55 PM  Show Profile Send xxmadfirexx a Private Message  Reply with Quote
Probably a bad sensor... I had the same problem with a 90hp merc I owned.

2007 Scout 221 150 Yamaha 4 stroke
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chris V
Senior Member



7012 Posts
Posted - 05/25/2012 :  12:20:04 PM  Show Profile  Visit chris V's Homepage Send chris V a Private Message  Reply with Quote
solid alarm or beeping alarm

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fishtales
Captain

632 Posts
Posted - 05/26/2012 :  6:12:13 PM  Show Profile  Visit fishtales's Homepage Send fishtales a Private Message  Reply with Quote
It is a solid alarm.
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spareparts
Senior Member



931 Posts
Posted - 05/26/2012 :  9:29:06 PM  Show Profile Send spareparts a Private Message  Reply with Quote
Does it sound as soon as you turn the key on? if so and if equipped, its probably the oil alarm module. Look for a junction of tan wires with blue stripes, one of them will lead to a small black box. Disconnect the tan wire from the junction, if the alarm goes away, Thats your problem
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chris V
Senior Member



7012 Posts
Posted - 05/29/2012 :  10:37:27 AM  Show Profile  Visit chris V's Homepage Send chris V a Private Message  Reply with Quote
solid alarm is only overheat i believe
does it happen as soon as you crank or does it take a few minutes?

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fishtales
Captain

632 Posts
Posted - 05/29/2012 :  9:36:28 PM  Show Profile  Visit fishtales's Homepage Send fishtales a Private Message  Reply with Quote
The alarm comes on after the engine has run for a while. Typically it starts when I run up the RPMs. The water coming out of the pee hole is cool to the touch.
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chris V
Senior Member



7012 Posts
Posted - 05/31/2012 :  09:33:12 AM  Show Profile  Visit chris V's Homepage Send chris V a Private Message  Reply with Quote
waterpump and thermostats, how long has it been since they were changed?

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