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    Here’s a good one for ya— engine fail, now constant warning horn

    Well my 2002 ECM-555 is back and installed. Engine started like new. Lessons learned: If you suspect something wrong with control module ( delayed actions, false warning horns ) be careful believing fault codes and replacing good parts when it is the ECM at fault. Also: can’t say enough...
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    Here’s a good one for ya— engine fail, now constant warning horn

    Update: after two mechanics could not read fault codes I sent ECM to specialist in California. They got back to me the day they received it saying “module is dead and needs repairing.” $650.00 plus shipping. Getting it back in a few days. Let ya know.
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    Cylinder head cost

    Unfortunately your in a tough spot. (I was there to) the cost of replacing these motors is so “low” that a job like this starts to be impractical. Replacement heads are about $800 each. With labor and additional parts you quickly get over $3,000. Or do what I did. Replace them yourselves. I’m...
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    Merc 5.0 EFI alarm beeps while cranking

    Try wiggling engine 10 pin plug that connects engine to boat. That brought mine back.
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    Here’s a good one for ya— engine fail, now constant warning horn

    2002, sea ray Sundancer 260. 5.0 MPI model number: 0M353720 CRUISING at 25 mph and engine cuts out completely. As if someone had switched key to off. Don’t think I remember hearing a guardian warning horn. Now when key is turned to ignition (eng off) guardian horn sounds continuously ( normal...
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