socalfj09 Posted September 14, 2018 Share Posted September 14, 2018 Quick update, took air filter box off, cleaned throttle bodies, working great so far. Link to comment Share on other sites More sharing options...
Supporting Member betoney Posted September 16, 2018 Supporting Member Share Posted September 16, 2018 Quick update, took air filter box off, cleaned throttle bodies, working great so far. Did you notice anything loose? possible air leak? Glad its running good now for you. ***2015 Candy Red FJ-09*** Link to comment Share on other sites More sharing options...
socalfj09 Posted September 19, 2018 Share Posted September 19, 2018 Just happened again this time at 7000 rpm probably gonna kill me.... please help! Link to comment Share on other sites More sharing options...
socalfj09 Posted September 19, 2018 Share Posted September 19, 2018 Sorry, I didn't find anything loose or broken or leaking etc. Link to comment Share on other sites More sharing options...
Supporting Member texscottyd Posted September 19, 2018 Supporting Member Share Posted September 19, 2018 Just happened again this time at 7000 rpm probably gonna kill me.... please help! I guess it goes without saying, but you need to sort that out before riding it anymore. A 7,000 rpm throttle hang on this bike could be really bad news. Was the bike cold, or already fully up to temperature? Without a physical throttle cable, I would look into sensors and smooth operation - especially closing - of the throttle plates. You mentioned it originally happened after a wheelie or brisk run through the gears... that sounds like something loose or getting knocked out is correct orientation. Throttle position sensor, maybe? Good luck. Track it down before it hurts you... Link to comment Share on other sites More sharing options...
Supporting Member betoney Posted September 19, 2018 Supporting Member Share Posted September 19, 2018 Just happened again this time at 7000 rpm probably gonna kill me.... please help!Without a physical throttle cable, I would look into sensors and smooth operation - especially closing - of the throttle plates. The FJ/FZ/XSR/MT/Tracer etc. do indeed have throttle cables, they attach to a sensor which opens the throttle bodies. If if you are sure there are no air leaks, I would look for something sticking or binding, turn the bars side to side, check that the throttle tube opens and closes fully without sticking. Make sure isn’t dragging on the bar end. My throttle wasnt sticking but felt sluggish, I removed the throttle tube off the bar and found grey gunk all over the bar. I cleaned the bar and throttle tube and the throttle twists much easier now. ***2015 Candy Red FJ-09*** Link to comment Share on other sites More sharing options...
jonno12345 Posted September 19, 2018 Share Posted September 19, 2018 Without a physical throttle cable, I would look into sensors and smooth operation - especially closing - of the throttle plates. The FJ/FZ/XSR/MT/Tracer etc. do indeed have throttle cables, they attach to a sensor which opens the throttle bodies. If if you are sure there are no air leaks, I would look for something sticking or binding, turn the bars side to side, check that the throttle tube opens and closes fully without sticking. Make sure isn’t dragging on the bar end. My throttle wasnt sticking but felt sluggish, I removed the throttle tube off the bar and found grey gunk all over the bar. I cleaned the bar and throttle tube and the throttle twists much easier now. Why does it do that anyway..? I was expecting to find all the electronics in the grip, but no, cables practically down to the engine... Just so they don't have to make new parts or something? Link to comment Share on other sites More sharing options...
Supporting Member texscottyd Posted September 19, 2018 Supporting Member Share Posted September 19, 2018 The FJ/FZ/XSR/MT/Tracer etc. do indeed have throttle cables, they attach to a sensor which opens the throttle bodies. You would think I should remember that... I stand duly corrected. Ride by mostly cable and a little bit of wire? Then I would definitely look into something mechanical hanging up in the throttle & cable assemblies. Link to comment Share on other sites More sharing options...
socalfj09 Posted September 19, 2018 Share Posted September 19, 2018 I've gone through all obvious stuff. Even took off the tps it rotates smoothly shows even change in resistance. Throttle cables and tube assembly are fine. When the rpm "stays up" I can click onto neutral and the rpm instantly drops to normal Link to comment Share on other sites More sharing options...
jonno12345 Posted September 19, 2018 Share Posted September 19, 2018 I've gone through all obvious stuff. Even took off the tps it rotates smoothly shows even change in resistance. Throttle cables and tube assembly are fine. When the rpm "stays up" I can click onto neutral and the rpm instantly drops to normalIf you have a bike before 2017 it might be worth checking this if you haven't already, if nothing else just to see the outputs on the diag screen: https://fj-09.org/thread/5045/accelerator-position-sensor-aps-adjustment Link to comment Share on other sites More sharing options...
socalfj09 Posted September 19, 2018 Share Posted September 19, 2018 Im going to try it out thank you so much, I'll let you know if it works. Link to comment Share on other sites More sharing options...
socalfj09 Posted September 19, 2018 Share Posted September 19, 2018 Time!... ok the tps was not in spec. We'll see if it makes a difference. Thanks! Link to comment Share on other sites More sharing options...
socalfj09 Posted September 20, 2018 Share Posted September 20, 2018 Ok rode the bike for the first time since calibrating tps.. sounds and feels way better, unfortunately still holding high rpm, if I downshift at 8500 rpms it will stay there until I go into neutral. Dealer had no clue what it could be. Link to comment Share on other sites More sharing options...
nsmiller Posted September 20, 2018 Share Posted September 20, 2018 So the RPM's hang if you pull in the clutch, but go down if you shift into neutral? Link to comment Share on other sites More sharing options...
socalfj09 Posted September 20, 2018 Share Posted September 20, 2018 My f@#&ing engine just seized. Well so much for yamaha reliability... Link to comment Share on other sites More sharing options...
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