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I found the TSB 2003-06 from mercrusier and tried the jumper wire from page 3 and it fixed my issue. Now time to search for a new ECM. Thanks for your help.
There were no codes at that time, that was last fall, haven't had it checked this season. Eng ser #m320993 , ECM info ecm5550202 if that is needed. I found a post about someone having the same issue but the to what the repair is not available.
Good afternoon, I'm having issues with my 2002 5.0 mercrusier EFI stalling under load after warming up. It will run fine for the first 10 minutes most of the time but at higher rpms getting up on plain when warmed up it just shuts off as if you just turned the key off , no warning. It will start...
