DON-Z-26ZX
07-24-2007, 08:02 AM
So goes my continued "SAGA" with the Donzi....I had first thought this would be something easy to troubleshoot & repair, but it went down hill last nite & quickly.....
I'm not 100% sure I do, but I am about 95% sure that I need to replace my ECM. Boat ran good all day Friday, Saturday went out, & running 4000rpms, & then dropped back to idle, checked everything...all was good. Got back up on plane, & again, back to idle (throttle was still in same position). Did this a couple more times, then I just put it back on the trailer & brought it home. I tried to run it last nite, & that is when it turned real bad, I get nothing...I have power everywhere, it turns over, but I don't hear the fuel pump running, & no spark. I tried to check for any trouble codes, the harness has .5 volt on the positive side of the test terminal, & I'm pretty sure it should be 12v there. So, I'm quite sure my ECM is the problem....just my luck...LOL...
So, I am hoping that someone may have a good working used one they are just dieing to get rid of...Again, 99 454 mag mpi. Or perhaps, someone knows of someone who repairs the ECM's. I plan on taking the boat down to have someone put a scan tool on it, & hopefully I missed something, but I think it's gone. Drop me a PM, or email if you or know of someone who has one they want to part with....
So much for reliability of the EFI...perhaps I should look at going carb...LOL...
I'm not 100% sure I do, but I am about 95% sure that I need to replace my ECM. Boat ran good all day Friday, Saturday went out, & running 4000rpms, & then dropped back to idle, checked everything...all was good. Got back up on plane, & again, back to idle (throttle was still in same position). Did this a couple more times, then I just put it back on the trailer & brought it home. I tried to run it last nite, & that is when it turned real bad, I get nothing...I have power everywhere, it turns over, but I don't hear the fuel pump running, & no spark. I tried to check for any trouble codes, the harness has .5 volt on the positive side of the test terminal, & I'm pretty sure it should be 12v there. So, I'm quite sure my ECM is the problem....just my luck...LOL...
So, I am hoping that someone may have a good working used one they are just dieing to get rid of...Again, 99 454 mag mpi. Or perhaps, someone knows of someone who repairs the ECM's. I plan on taking the boat down to have someone put a scan tool on it, & hopefully I missed something, but I think it's gone. Drop me a PM, or email if you or know of someone who has one they want to part with....
So much for reliability of the EFI...perhaps I should look at going carb...LOL...