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needaspeed

code 52 eeprom failure?

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needaspeed

Tech said thats what they came up with when cheking codes. What does that mean?

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needaspeed

Said i needed new ecm. Wasnt controling the timing and thats why my boat has the surging issue.

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Wayne

Normally if that is the only fault a failed ECM is the right diagnosis. I have see that fault present with a few others when battery terminals are loose and break connection while running causing the boat to shut down.

What did you initially bring the boat in to the dealer for?

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needaspeed

Posted a video a few posts down. "Sunsetter surge"

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Wayne

Curious, how old is your battery? The last time I saw a real EPROM fault the engine wouldn't even run, and they are rare. (This is from the automotive side).

The video you posted is almost exactly the behavior I had with a loose batter terminal. Since you checked those I'm wondering if something is loose some where else. Or possibly an internal short on the battery or one terminal is separating internally. I wouldn't buy a new battery just exchange it from a car for a test.

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needaspeed

I havent checked the batteries yet. I had back surgery a week ago so im pretty limited now. Plan on checking before i send the ecm off for reprogram.

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