Yamaha 115 , two stroke , 2001

by David
(Venice fl)

Engine runs fine , overheat alarm goes on randomly , puts in limp mode , when happens put in neutral let idle , get up on plane works for a little , repeats alarm , engine is not overheating,
Replaced impeller ect,
Heads cleaned gaskets ect ,
New poppit valve, new thermostats, new heat censors ea head.
Pilot stream like horse. ,
Motor has no issues ecept this alarm
Its the best running overheating motor
Its in shop again it will not alarm unless its in water being driven and theres days it wont do it at all
No one can figure it out
Its not oil injector alarm either,wieing harnes is only thing not replaced

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