EFI ECM HELP PLEASE.

[FUN CHASER]

Hello everyone. I am in need of assistance. I have a 2000 225 LEFI, it is a 3L, sn-0T054491. Story short version, customer knocked a board over in my shop ' the board hit the wall plug my boat was plugged into and shorted things out. I am sick about it because I got it a few months ago, 1 owner, extremely low hours (130 lbs compression on all 6) never a bolt turned on it. Any way I am now looking for ignition ecm and fuel ecm., and after searching I am not sure what will or will not work on my motor. My mechanic said mercury only used these ecms for 3 yrs and said it is basically an xb and to find some 300 ecm's, idk. All the ones I find, the numbers are slightly different so I am unsure of match. I really don't care if they are for a 225,250, or 300 as long as they work and are plug and play. My stock ecm #'s are, IGN ECM 830044 17 (PI92420701) FUEL ECM 830046 12 (PF92420701) Thank you in advance for the help.

[JOE54]

GOT UM BOTH on 2002 250 xb stock no modifications to either

[bkeenom]

Buy these. ∆∆∆∆∆∆∆∆∆∆∆∆∆∆

[FUN CHASER]

How much sir ?

[FUN CHASER]

GOT UM BOTH on 2002 250 xb stock no modifications to either

How much sir ?

[JOE54]

5 hunid (500) each plus shipping , rather you brought boat i install and lake test with you, itll be FUN

[FeFanatic]

Gotta ask, was this the battery charger power wire the board hit? And how did that cause ecm failures? Are you absolutely sure those ecm's are bad?

[JOE54]

^^^^^^^^ +1 , better be sure

[EuropeanAM]

^^^^^^^^^^^^^^ +2.... There's a fuse that should have failed in an effort to protect them.

[lpugh]

Gotta ask, was this the battery charger power wire the board hit? And how did that cause ecm failures? Are you absolutely sure those ecm's are bad?

Makes no sense to me! Can not see how this would have caused electrical issues on the motor

[FUN CHASER]

This is why I wanted to ask you guys on this forum, I know thru your expertise I will be lead in the right direction. I guess I should have given all of the details in first post. So here goes. Prior to this incident the motor performed flawless. When it happened yes it was the on board battery charger that was plugged into the wall, I do upholstery and work long days and had not yet put a shutoff and bus bar on the boat. When I took it to the lake and put it in the water about the time I got out of the no wake zone, I noticed a slight miss, I thought I had googen bad gas because I put 25 gallons in on the way to the lake at a place I never get fuel, so I didn't think too much about it when it had a hard time planning out and didn't want to run right, I went about a mile to my first planned stop to fish. When I went to move to another area it was still not right so I shut it down pulled the hood and found the plug that connects the main harness to the injector harness was fried, the blue wire completely and the red one partially. So I used the trolling motor back to the ramp, used big motor to load. Got it home , looked for other burnt wires and fuses and found none. I pulled the injector harness and injectors, ptched the harness just to test, got fire thru each wire , I then checked the injectors and they are opening and closing ( my plan is once I figure out exactly everything is to send the injectors to be checked and of course new harness). All coils are firing. When I tried to start it again it won't fire up and fuel is dumping out of the exhaust so I assumed stator and or fuel ecm. Called my mechanic(rebuild guy) he said bring it in to plug into computor to see what all was going on, i told him i didnt think it could be plugged in and sent him pics of the motor and he agreed and said one or both of the ecms are probably fried, gave me the number to simoms in cali to see if they could check and or rebuid them. I pulled the ecms yesterday and the gel is lumped up in a couple of spots, so (probably out of ignorance) i assumed they were damaged also. Thank you again for all responses and direction. I absolutely hate that this happened to this motor and hoping to get it back running .

[lpugh]

First thing I would do is disconect everything from batteries except the charger, The see if the charger still works. I doubt this was the cause of this problem, also check voltage at the batteries while charging (max of 14.6 volts)
I would also find another tech to have this checked out, this is no DYIY job.

[Ryno 615]

PM sent.

[FeFanatic]

Can you post some pics of what you are describing?

[JOE54]

GOT UM BOTH on 2002 250 xb stock no modifications to either

as well as complete electrical system for this engine

[FUN CHASER]

Update, flooding issue. Motor seems to be flooding itself out. Will run for a few seconds then dies, fuel poring out of exhaust. Yesterday when I had a few minutes I squeezed the primer bulb which would not harden up, I could hear fuel moving thru the engine somewhere, I then discovered fuel flowing out of a small hole in the plenum on the port side, beside lower butterfly. I pulled the float to see if it was cracked, found no cracks or any fuel inside of it. I cleaned fuel pump and pressure regulator screens, and replaced fuel water seperator. Now when key switch is turned on and fuel pump runs fuel is still flowing out of the same place. Where do i look for from here ? Thank you in advance.

[EuropeanAM]

You likely have two, possibly THREE separate problems that can all result in a rich-running engine:

1. VST Needle/float problem (VST is overflowing, which dumps to the small brass fitting and runs down the back of the intake)

2. Melted wiring you described indicates there is likely a short (pinched wires) inside the Fuel Management assembly.

3. Check fuel pressure at KEY ON and then at 15, 30 and 60 seconds after turning key OFF. If pressure is dropping substantially, you have a fuel leak as well.

[FUN CHASER]

You likely have two, possibly THREE separate problems that can all result in a rich-running engine:

1. VST Needle/float problem (VST is overflowing, which dumps to the small brass fitting and runs down the back of the intake)

2. Melted wiring you described indicates there is likely a short (pinched wires) inside the Fuel Management assembly.

3. Check fuel pressure at KEY ON and then at 15, 30 and 60 seconds after turning key OFF. If pressure is dropping substantially, you have a fuel leak as well.

Thank you sir.

[FUN CHASER]

as well as complete electrical system for this engine

Do you have a wiring harness ?

[JOE54]

as well as complete electrical system for this engine

yep