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Shocked ECU?

M

Michael Goodwin

Just got it firing!
Joined
Sep 6, 2018
Messages
4
Location
New York
I had a bad day while working on my 2005 Nevada 750 and accidentally shorted the battery cable while removing a defective starter. Many sparks but managed to avoid losing a finger or burning up the bike. After finishing the starter replacement (which went well after I disconnected the battery - my stupid mistake) I noticed a significant change in the way the bike runs. I’ve got lots of wheezing at low rpm’s, poor acceleration and a general feeling that the motor is not working like it did before the arcing incident. The bike starts, idles and run, just no zip. Vibrations are now more noticeable too.

I haven’t found any blown fuses yet, and am not getting any indications from the instrument panel that there is a problem.

I know this is only a little info to work with, but if anyone has any suggestions as to how to go about narrowing down the possibilities I would appreciate. Naturally my mind goes to the worst possible cause - damaged electrical component(s). Which could include the ECU ($$). Thanks all. And happy motoring.
 
Check all your wiring especially ground wires that may have gotten burnt.
May have to peel back some insulation to see if wire is discolored from getting hot.
Wires that have gotten too hot loose conductivity.

If you blew the ECM the bike would (probably) not run at all.
 
Trout said:
Check all your wiring especially ground wires that may have gotten burnt
May have to peel back some insulation to see if wire is discolored from getting hot.
Wires that have gotten too hot loose conductivity.

If you blew the ECM the bike would (probably) not run at all.
Click to expand...

Thanks for the encouraging reply Trout. I will start checking out those connections.
 
I would look for someone that has software to check it out. I have had that experience that I had to fix on an early V7, and it was in a limp home mode type of running. The ECU did not want to communicate with service tool either. It's (15RC) mounted to the frame right by the batt, it frame got zapped it can effect the ECU.
 
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