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Old 01-10-2016, 07:43 AM   #1
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Wmiii's Avatar
City: Bradenton, FL
Country: USA
Vessel Model: Mariner 40
Join Date: Oct 2011
Posts: 119
Update on stopped Cummins

I thought I would send an update on what the mechanic found and the repair for my QSB 5.9 230 hp Cummins diesel.
We were cruising down to Ft Myers Beach from Bradenton, as we were going through the mooring field to our mooring, the engine stopped. We were towed to a mooring and after troubleshooting, discovered I needed professional help.
The mechanic came last Wednesday and found coolant moisture in the wireing harness and the related corrosion. That shorted my ECM out.
Apparently, coolant from the reservoir seeped into the wireing harness though a low coolant sensor. This has probably been going on for a while and now just caused the problem.
Apparently this is not a common problem, but one the service people had experienced before.
Now we are good to go on down to the Keyes as soon as the weather cooperates.

Wm Mayberry
Mariner 40

Ft Myers Beach
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