Have a 225 opti (2005) that after idling for about 10 miniutes I get a single beep and the check engine light flashs. Only one beep. I can give it a little gas and the check engine light goes off. New water pump the idling temp is about 124 degrees. Any ideas????????
Engine serial number?
Are you getting this temp reading from a Smartcraft Instrument?
Water pressure and RPM when this occurs?
Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
Still consider myself a "Marine Apprentice" after 48 years (learn something new every day).
Mercury Parts, Mercury Outboards, Smartcraft & Accessories, Injector Service, TDR Reeds- BBC Sponsor
SN# 1B010683 . The flashing check engine is from Smartcraft gauge. It is running about 650 Rpm's when it happens and the water pressure is showing about 4 or 5 psi on the warer pressure gauge.
I would recommend that you have the engine connected to the Computer Diagnostic System, and request a PRINTOUT of the "Freeze Frame (FAULT) History".
This history will provide the most accurate "clues" as to what the cause of your overheating condition is.
Likely causes:
-Water Pump
-Thermostats
-Poppet Valve
-Restricted telltale fitting
-Resistricted Air Compressor Strainer
When chasing down cooling system problems, ALWAYS- ALWAYS start with a FRESH WATER PUMP.
Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
Still consider myself a "Marine Apprentice" after 48 years (learn something new every day).
Mercury Parts, Mercury Outboards, Smartcraft & Accessories, Injector Service, TDR Reeds- BBC Sponsor
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