• Ciao Guest - You’ve landed at the ultimate Guzzi site. NEW FORUM REGISTRATIONS REQUIRE EMAIL ACTIVATION - CHECK YOUR SPAM FOLDER - Use the CONTACT above if you need help. New to the forum? For all new members, we require ONE post in the Introductions section at the bottom, in order to post in most of the other sections. ALWAYS TRY A SEARCH BEFORE STARTING A NEW TOPIC - Most questions you may have, have likely been already answered. DON'T BE A DRIVE-BY POSTER: As a common courtesy, check back in and reply within 24 hours, or your post will be deleted. Note there's decades of heavily experienced Guzzi professionals on this site, all whom happily give endless amounts of their VALUABLE time for free; BE COURTEOUS AND RESPECTFUL!
  • There is ZERO tolerance on personal attacks and ANY HYPERLINKS to PRODUCT(S) or other competing website(s), including personal pages, social media or other Forums. This ALSO INCLUDES ECU DIAGnostic software, questions and mapping. We work very hard to offer commercially supported products and to keep info relevant here. First offense is a note, second is a warning, third time will get you banned from the site. We don't have the time to chase repeat (and ignorant) offenders. This is NOT a social media platform; It's an ad-free, privately funded website, in small help with user donations. Be sure to see the GTM STORE link above; ALL product purchases help support the site, or you can upgrade your Forum profile or DONATE via the link above.
  • Be sure to see the GTM STORE link also above for our 700+ product inventory, including OEM parts and many of our 100% Made-in-SoCal-USA GTM products and engine kits. In SoCal? Click the SERVICE tab above for the best in service, tires, tuning and installation of our products or custom work, and don't miss our GT MotoCycles® (not) art on the BUILDS tab above. WE'RE HERE ONLINE ONLY - NO PHONE CALLS MADE OR RECEIVED - DO NOT EMAIL AND ASK QUESTIONS OR ASK TO CALL YOU.
  • Like the new V100, GuzziTech is full throttle into the future! We're now running on an all-new server and we've updated our Forum software. The visual differences are obvious, but hopefully you'll notice the super-fast speed. If you notice any glitches or have any issues, please post on the Site Support section at the bottom. If you haven't yet, please upgrade your account which is covered in the Site Support section or via the DONATE tab above, which gives you full site access including the DOWNLOADS section. We really appreciate every $ and your support to keep this site ad-free. Create an account, sign in, upgrade your account, and enjoy. See you on the road in 2024.

Dead Norge--fried ECU??

John in PA

John in PA

Cruisin' Guzzisti
GT Contributor
Joined
Jul 31, 2009
Messages
255
Location
Hollidaysburg, PA
I installed a plug-and-play O2 eliminator unit that I purchased from a forum member. I've done this before on other machines, and am confident I didn't make any installation mistakes. I believe it was one of the Dynojet units, though not certain. Bike started and ran normally for about 10 minutes. Then died suddenly. Lights, engine, everything, like it was axed. Turns out the 30A main fuse blew. Battery voltage appears fine, but when replacing fuse, bike goes through a prolonged startup series of events, sounds like solenoid clicking in the area of the ABS pump. Several seconds later, dash goes through normal light show and appears normal. Pressing the starter gives an audible clunk and the display goes black. Key off, back on, goes through the routine again. No ECU errors recorded, no Dashboard errors recorded. I can set the clock and it will run. On two occasions after removing and replacing the main fuse there was a graphic on the dash display that said ECU and a picture of a "plug unplugged." That showed twice, but not the other times. I assume the ECU is up under the tank, and that if it was truly unplugged either it would show no error information or else throw some or multiple codes(??)

Is this an ugly coincidence, or is it likely that the O2 eliminator fried the ECU?

I removed the O2 eliminator and restored everything to normal before doing the diagnostic codes. There also were no codes before I removed the O2 eliminator.
 
Hey John,
I used the O2 unit from Todd with no problem. You may want to check the ground connection that you used for it, by the starter, and may want to make sure the connection at the battery terminals is ok (assuming you disturbed it by disconnecting it when you installed the O2 eliminator....)
Good luck
Nick
 
I'm a little concerned about the ECU disconnected message. The only time I saw that was on a bike with a bad ground at the ECU that fried the unit. Since it isn't persistent I'm hoping that what Nick suggested will take care of your issue. Also see the post on the positive terminal sulphating (forming lead sulphate) which will give you some of the symptoms you describe.
 
You must log in or register to reply here.
Back
Top