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jimmy_ahlvik

05-01-2021 03:41 PM

Excessive engine speed

I’ve got the alarm excessive engine speed on my Merc 600sci at about 4400rpm, does anyone know what this alarm means?

JaayTeee

05-01-2021 11:18 PM

I’m going to say it’s not sensing being in gear

AllDodge

05-02-2021 06:31 AM

^^^Agree, Look on the shift plate to see if there is a switch. If there is disconnect it and see if it happens again. Disconnecting it will not set a code or do anything else

Should add; I'm not real familiar with your motor, but none of the Merc's will have any issues doing the same

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