alarming...
floater212
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does anyone know which mercruiser alarms that would cut the motor off? I have a 2005 212 350 MPI that gets an alarm AND kills the motor, so fast I get one sound as the motor dies but starts right back up can run all day after, maybe does it again or not for a couple of outings. had it hooked up to reader at marina, 3hrs on it and no codes. they don't know or have a direction to look for. help! someone said once it could be the gear lube tank but that only has an alarm and wouldn't kill motor.
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There is a good chance either your crank position sensor (ckps) is dying, which will cause alarms, but when the engine loses position/mapping, it will die.. ckps usually die in a certain range, and that range grows to effect other ranges.. or.. camshaft position sensor or cps.. same thing, but it usually doesn't care about a specific range.. losing wither will cause the engine to behave dang strange in the seconds before it dies, and may store multiple codes in addition to the cps or ckps..
Are you sure it's an alarm and not the tone between key on and before you hit the starter? I'd be looking at main engine grounds, then connections, especially the pcm's..