Hey guys, finally got my undertail one wired up yada yada....took it for a ride. And let me tell you felt great since I have been riding a cruiser for the last week (motor went out in my truck :thumbd anyways went for a ride that night prob a 2 hour round trip ride without a single hiccup.
Parked it in the garage for the night next morning, rode to the beach, again no problems...then later I was riding home and boom backfire out of hell all power lost. Pull over, find out I somehow blew the main fuse by the starter selnoid...so I got a spare...stuck it in, bike started right up. Got about 3 miles from my house and did it again...but also blew some other fuses and lost all headlights...I replaced fuses and have been checking wires....still am really but was just curious if anyones had a similar problem?
Any input would help and be greatly appreciated thanks guys.
I had the same thing! It was a wire, that was not hook up right to one of my head lights. so I got the right peace and hooked it up, it has not happened again:thumb:
jqccbr954....its a 93 900rr
tweezy...yeah when i got the bike previous owner had someone rewire a good bit of it...i just need to get a new wiring harness and start over haha
but if it helps i havent had headlights since it happened...so i guess its just more wire chasing for me.
should be fine, with a few changes/mods! if you want one to fit with no mods, you need a 93 or 94 wiring harness! a few things change from year to year! like the speedo healer, temp pickup ect!
havent tried the continuity test yet. hell havent even been home to work on it threw a rod in the truck and now this haha but will be breaking her down this weekend and getting into it.
thanks for the info and suggestions
stripped it down found problem melted the pc that goes by the selnoid. so i got it right, now when i go to fire the bike it spins and every once n a while itll fire. one time it fired and flames resided in my exhaust....any suggestions here guys,
and today i found out that i have no spark, sorry for the slow updates can only do what i can. starting to wonder if my reg rec may just be blown. any help would be appreciated
Not a lot of crazy electrical gadgets on the original 93 RR. If you had just finished up a tail section re wire, I would start there. The main fuse is only going to blow if there is an over amount of power going to it. Especially if it does it twice, I would say something is either arcing or grounding. Exposed wire somewhere. The reg/rec could be the problem, but will be hard to check without bike running. Here is a photo of how to check continuity on it from Hondas manual.
Ian, I GREATLY appreciate the reply and will try that after this post lol
I have found out now that I have zero spark, thinking somehow my coils got fried that or ecu. I have searched all over, and I am not sure if I am test the coils correctly. If I remove the wires from the coil and test the two terminals with my multimeter I get 3.7-4.1 ohms. Now if I take one lead out and ground it I get nothing or a 1 on the meter. Also get the same thing if with the wires still unplugged from the coil, I leave one lead in the terminal and place one in the plug boot. I get a 1 so no cont. I dont know if thats the correct way to test my coils but if someone could give me a little enlightenment I would be very greatful.
Got my headlights back by the way....they blew. and fund out what happened the connection by the starter selnoid got hot and melted then two of those wires touched. Pulled the wires, crimped and reconnected. Does it matter where they go exactly? Been reading people saying it doesnt, but Im pretty sure they are in the correct placement anyways.
Thanks again guys.
In a thread called CBR 900 RR SC33..........by martin_l I posted the correct procedure and specs on how to test the coils. Page 7 post #97 is the scan of the manual. I would post a link to it but don't know how! hahahahaha The 96 coils should work, I would imagine.
I need a better standard term for what you are describing. Do you mean the primary wire coming from the wire harness? Or are you testing individual spark plug ( secondary) wires? Here is a page for the ICM.
now, to jump the switch i assume i could take the black and black/white wires and connect them? I appear to have cont everywhere now... Ian thanks man, just added you some rep haha
Yeah, that's what it looks like in the manual, the kill switch breaks the black and black/white connection. I just happened to have it in front of me today. lol. Thanks for the rep!
Have you made sure that other switches such as side stand and clutch are bypassed as well? Jump everything to make sure they're not giving you a false no spark condition. If everything had continuity then I would have to go with the ICM being faulty. Any chance of getting a known good unit to test? Does it still turn over when you thumb the starter?
just browsing through some threads and might have found my problem.
my neutral light isnt coming on, so if read correctly my cdi doesnt know its in neutral therefore...no spark?
does that sound logical bc mine i might kick myself for not thinking about that.
unfort guy before me took out the gauges...i have some from a 99 but wasnt sure how to switch those over.
thanks again
Wow, yeah that will play a part in this. The neutral switch runs with the clutch switch, clutch diode and the ICM. If your switch or clutch diode is boogered up then it could be cutting spark somehow. Pull the clutch in with the side stand up and see if she fires up. Pulling the clutch in allows you to start the bike while in gear, so who knows. Give it a shot.
yeah, well i know my clutch switch is bad but thats easy enough to jump. anyone wire out the side stand switch? ill keep looking around, but its 3 wires not two so dont wanna cut it and mess it up. having enough troubles as is.
so as far as this neutral light/switch anyway to jump that? idk what made me lose the light honestly but it certainly isnt on....going to try some more testing later.
still havent been able to look, will tonight but if the bulb burnt out for the neutral switch, would that cause it not to complete the circut? thank yall hopefully this will be it.
Tommy, do you have a pink wire coming out of the ICM? If so you may have a diode under the ignition cylinder. If its blown it might kill your spark. I'm not sure if it kills the starter or just spark. If you don't have the pink wire then it doesn't matter.
yea that lil diode will cut spark from what I understand somehow. guy posted not long ago about a buggy with cbr motor etc and no spark cause the diode poped or his new ignition had wrong diode. but said he went to radio shack picked it up and easy relatively easy fix once done.
thanks guys, yeah i was reading the one about the motor in the buggy.
will have to look for that pink wire.
if i dont have it, and cant get that n light back on can i just jump those two wires to see if thats my problem, dont see why itd be a problem
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Related Threads
?
?
?
?
?
Honda Motorcycles - FireBlades.org
1.2M posts
83.2K members
Since 2003
A forum community dedicated to Honda Fireblade motorcycle owners and enthusiasts. Come join the discussion about performance, racing, modifications, classifieds, troubleshooting, maintenance, and more! Find conversations about your favorite CBR 900 or 1000 series RR models.