Mercruiser Shift Interrupter Switch

[Ken Stephens]

Would a interrupter switch that is bad cause your engine to shut off at speed or movement and also kill power to panel. Just as if the key was turned off. Sometimes the breaker tripes. It then resets and runs great until the next time . You never know when the next time is... I think I have a haunted boat.

 

[thumpar]

The interrupt even if it not working correctly and engaging when it shouldn't would only interrupt spark. It sounds like you may have some loose or corroded wiring.

 

[Rick Stephens]

That switch grounds your ignition, so yeah, if malfunctioning it will kill the motor.Power going off to the dash would indicate it isn't the interrupt switch.

(note, usually better to continue one thread instead of creating new one. That way easier to go back and remember past details)

Rick

 

[buzzleo]

if u have breakers tripping intermittently prob need to look for a short in wiring.

 

[tank1949]

U need a buddy to wiggle wires while u watch dash. U'l find it!!!

 

[Ken Stephens]

Rick I am looking everywhere I can .. This tihng has kicked my ## and the Mercruser Service dept. Just dosen't mess up when we want it to. Checked all connections grounds cleaned and added dia elct grease. Went 30 hrs no problem and bam it got me.. Just replaced the ing switch and hope that was it.

 

[Rick Stephens]

If it isn't, maybe pull a backup hotwire from the battery to the ignition switch. Attach an alligator switch and leave it lay. If it powers off, clip on to the battery and see if it fixes it.