Hey guys,
I recently posted about another issue regarding fuel pressure after my engine suddenly started sputtering and conking out, and loud whine from the pump - can see more in my original thread on it.
Narrowed down to fuel issue, changes filters, cleaned screens, and replaced the pump. Finally got pressure back at the rail...and now the engine won’t turn over after making these repairs...
I had a marine tech come do a scan to see what it could be as it’s become beyond my level of diagnostic. He seems to think it’s the ECM. Yet it seems so coinciden diéntale my ECM would die (only 380 hours on the boat) right after solving the other problem with fuel delivery.
my question is, is there anything that could have been related from the pump issue that’s causing this ? Or did my limp back to my dock after the pump initially started to go cook my engine / overheat the ECM?
before replacing the pump, the engine was turning over, yet wouldn’t stay running. Now it won’t turn over at all. Marine tech thinks ECM is blocking the signal to turn over, sending 0 RPM. See link for trying to turn over while scanner is connected. We also changed the ignition module to rule that out as it was a $40 change out vs. A $1200 ECM.
thoughts ? Ideas on what to narrow in on before replacing ECM? Could the new pump have changed anything (Direct Indmar replacement, only change was it doesn’t have the line to dump fuel back into tank) , or did I really fry the ecm from my limp back to the dock, and it just was ready to die anyway (even though the week after, before replacing the pump, it would start?).
I’m losing my mind here and going to go broke if I have to replace every part unnecessarily !