My ECU went out on my 200 merc EFI.(Motor baught new in 2000.) Will an ECU off a 93 XRI mount up and work on my motor???.Thanks for your help.

No, your 93 was analog, your 2000 is digital. You can send it to rapair in Alabama, they repair them, sorry don't have contact info.

Thanks Pat.
Anyone have an idea where I can find one parted out in the state of Texas?

You might take a look at www.screamandfly.com
or www.bassboatcentral.com

I think if you go with Rapair you have to send it in through a dealer.
Sean at Rapair does great work.

http://forums.screamandfly.com/forums/showthread.php?t=207935

You might give this guy a call, it has been a long time since I messed with Mercs.

I have a good used one off a 2001 175..
p/m if interested

I have your ECU 2000 200 merc. I will need to check around and see what they are going for and let you know. call if int. 281-312-9856 cary

DFI Technologies

Thanks guys for all your responces. I will be looking into these and making phone calls.Bass are biting at Amistad and gotta get the boat going soon.

Just curious. How did you find out yours is bad and what was is doing or not doing...........

I was told by 2 different mechanics here in San Angelo that it was not getting fuel from injectors to plugs?? Getting fire and fuel to that point. Can spray fuel directly to that point and will fire up.
I am no mechanic at all so this is what was explained to me.

Thats why I was askin. Your motor is a cdm motor. Good grounds ARE a must. ALL OF 'EM (little ones and big ones). A bad one (ground) will do exactly what you describing. It won't let tha injectors fire but everything else works. There are a couple other electronic parts in that system that will give tha same results. If you could borrow another ecu (any hp but has ta be digital) known ta be good to try. If you put a known good ecu on it and it still does tha same thing it might save some dollars. If it starts and runs then know for sure its tha ecu................

TLW,
Dont know if I can find another ECU try this. Are you talking about grounds inside the ECU/ or grounds I can check myself outide it like to the motor? Maybe from the wiring harness?

On tha motor. Trace down every BLACK wire you can find and make sure its connected in some way. Either to a PART or tha MOTOR itself. Be sure ta look in every nook and cranny on tha motor. Clean any and all ground connections you can find. Make sure there is a ground from tha top of tha ecu case where it bolts to tha plenum (between tha ecu bracket and tha nut) ta a good motor ground. You might have to add this one But you can't have to many grounds with this system. Be sure to disconnect tha positive at tha battery while your doing all this. Hope this is tha problem. It never hurts ta check this stuff anyway................GL, T