Stern thruster quit working

Gmoney

Gmoney

Member
Joined
Jul 17, 2025
Messages
16
Fluid Motion Model
C-28
Vessel Name
Devious Dorid
2019 c28. Stern thruster quit working, I’m getting a large voltage drop when engaged and the thruster works when you apply a new 12v directly to it. My assumption is a bad wire, what gauge of wire runs back to the thruster from the thruster fuse block?
 
Hi there,

That might be an issue with the relay. Not sure what the gauge is, but you can check continuity on the wire to make sure it is not an issue.

Ralf
 
Ralf H said:
Hi there,

That might be an issue with the relay. Not sure what the gauge is, but you can check continuity on the wire to make sure it is not an issue.

Ralf
Click to expand...
I diagnosed it down to a bad IPC control box. I replaced that, and I had a working thruster both directions, that quit after a couple short uses in the span of an hour. Any ideas?

Thank you
 
Wow, unfortunately I do not. Did you contact the vendor to return the replacement unit for warranty, just to be sure it wasn't faulty? You should check the voltage to make sure there are not spikes that are damaging the IPC so you don't throw good after bad
 
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