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Old 01-03-2016, 06:18 PM   #21
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Is the fuse up stream or down stream of the plug?
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Old 01-04-2016, 10:26 AM   #22
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I doubt I can help with specific advice on the electronic Cummins, but there's a trick I use in my shop to find shorts:

Get your multimeter and set it on "beep". Connect the black lead to ground with an alligator clip. Clip the red lead to the "load" side of the fuse. The meter will then "beep" continuously due to the short circuit.

Now go through the wiring and wiring harness, wiggling and moving all the components and wiring bundles. The instant the "beep" stops, you've found the place that the short is located.

Like the others, my hunch is you have a chafed wire someplace, probably in the instrument panel (do you have a panel on the flying bridge?) or the harness to the engine. The chances of a short in the harness that is integral to the engine is pretty low.

GOOD LUCK!

J.S.
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Old 01-05-2016, 04:38 PM   #23
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Try Tony at tony@sbmar.com check out his web site Custom Cummins Marine Diesel Repower Specialists he knows all weaknesses of Cummins.
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Old 01-06-2016, 08:31 AM   #24
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Bill:

How did you make out finding that short circuit?

Hopefully you've found it and now you're cruising in some exotic place that doesn't have internet service.

...it's always good to hope.

JS
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Old 01-06-2016, 10:17 AM   #25
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Mechanic just left. Looks like a lot if corrosion on wiring harness connectors. He's taken ECM to shop to see what shape it is in.
No signs of water leaks, but even found some moisture in connector.
Now wait and see what's next.
It is what it is!

Wm
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Old 01-06-2016, 11:29 AM   #26
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Could be from detailers washing engines. I've made a lot of money recovering from recently cleaned engines.
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Old 01-06-2016, 01:19 PM   #27
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Expensive news!
Needs ECM and wireing harness.
Don't know where corrosion came from or when.
Should be good to go tomorrow (good news)
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Old 01-06-2016, 02:14 PM   #28
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Quote:
Originally Posted by Wmiii View Post
Expensive news!
Needs ECM and wireing harness.
Don't know where corrosion came from or when.
Should be good to go tomorrow (good news)
So out of curiosity, how much does an ECM cost? I think this is a relevant general question because my reply to people that question the reliability of common rail engines is that you could carry a spare ECM. Is it so expensive as to be too costly to carry a spare?
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