Engine died on water, no fuel pump or injector fire...

[callen369]

Boat ran great all day, 100 yards from ramp it died. Will turn over, but the pumps do not kick on, and injectors do not fire. (checked after hot wiring pump) Checked my kill switch, even pulled it and jumped the wires. No help.

Ideas???

 

[callen369]

FYI....It is a throttle body injected engine....was a 5.0 GXIA, with lower end changed to a 377. Checked all my grounds, pulled and resecured all connectors on engine.

Pumps do not even prime when key turned, but dash lights, etc come on.

 

[callen369]

Ran troubleshooting for fuel system....pointed to wiring or ECM....

Ran troubleshooting for injectors....pointed to wiring or ECM...

tried to read codes....light stayed on steady....ran troubleshooting for MIL....pointed to ECM....

So I sent my ECM back to the guys at OBD2allinone.com for evaluation. Hoping it can be repaired in a cost effective manner...

 

[WristyAbq]

I got the same problem, did you get your ecm back and did it fix the problem?

 

[callen369]

They could not fix it. I found a used one local, and sent it to them to flash. Should be here Wednesday.

Do a really good check on your electrical system. Grounds and all. I had a ground wire that broke at the terminal.