Engine Cutting Off Electrical Problem?
This problem occurred a few times when I first purchased the bike about a year ago but is now getting worse. Shop that worked on it then suspected the bank angle sensor and repositioned it. Problem seemed to be somewhat fixed but still occurred only on rare occasion.
Bike starts and runs fine. However after riding about an hour today, it cut off 5 times. It is entirely random and not when I hit a bump or turning etc. Occurs in different gears and different rpms. It is like hitting the "kill switch" and engine just stops. The only dash light that comes on is the oil pressure light. Headlights still work normally after engine has died. Normally after turning key off and then back on bike fires back up until this happens again. However today on two occasions, bike would not start. I let it sit for about 10 minutes after several unsuccessful starting attempts and finally started back up and ran normally. I have noticed I still get the fuel pump "whine" sound when it would not start. I am not getting a fuel injection light indicating a problem and comes on normally when starting.
Trying to get some ideas how to trouble shoot this intermittent but increasing in frequency problem because fear it is eventually going to leave me stranded on the side of the road. All maintenance has been done on the bike and up to date. I was going to start by taking the kill switch apart to look for corrosion etc. I have also checked battery which is new for loose connections and the ground.
After the ride, this is what I have done and not found any obvious problems:
Removed left fairing, seat cowl and raised the tank to search for any obvious wires that were frayed or not seated properly. I replaced the fuel cutoff relay with a spare that I purchased some time ago. I removed the headlight relay and noticed it appeared "older" and while not in terrible shape, the connectors appeared somewhat discolored compared to the new one. I moved the fuel cutoff relay to the headlight relay position. While inspecting all of the connectors I could get to with the tank up, I used dielectric grease to apply to the connectors. Inspected the sidestand "green connector" under the tank and applied grease. Took apart the engine stop/run switch and applied dielectric grease but did not note any problems. The bike does not have a power commander. Planning to ride it again today and see if the problem continues. I realize this is probably a "shotgun" approach to fix this intermittent problem and any ideas or other things to check would be appreciated?
Last edited by robertj1979; 08-21-2019 at 08:43 AM.