797 handlebar shake and stalling

[DMDubber055]

I'm hoping someone here can offer some insights or advice. I got a 2019 Monster 797 and I'm experiencing a few issues when riding. First, my handlebars feel super loose lately. Going over any bump or even just wiggling them makes them shake like crazy, like it's about to fall apart. This only started after my last routine maintenance about two months ago. But my bigger concern is that the bike keeps shutting off if I coast in 6th gear with the clutch in, especially on long highway off-ramps. If I try the same thing in other gears, it just sputters and threatens to die but usually recovers. In both cases, the RPMs drop below 500, which can't be right. I already had a valve adjustment done, but that didn't fix it. Any ideas what could be going on?

 

[Joe Goldberg]

Well that bar shake is something to worry about... Make sure to check the riser bolts and steering head for any looseness ASAP. As for the stalling, it could be a dirty idle control valve or an ECU issue that needs a reflash.

 

[HighwaySoul]

Great choice, make sure to check those bolts first. A dirty IAC or a glitch in the ECU could definitely be the reason for the stalling

 

[fastdesmomachine163]

I'm no expert, but double-check the torque on the bar clamp, it's easy to miss during maintenance. About the stalling, take a look at the idle control valve and the TPS calibration. A dip in RPMs like that usually means there's something up with the idle air or maybe a glitch in the ECU mapping

 

[Carter.M]

Two separate issues here
Firs, the wobbly handlebars are likely loose triple clamp bolts or steering head bearings and
Secondly, the stalling at low RPM could be an idle/ECU mapping issue or a clutch drag problem
Visit a dealer darling

 

[Kasumi_Rokkaku]

Loose or worn steering/head bearings are a usual suspect for bar shake. Also check wheel balance, fork alignment. For the stalling, dirty throttle bodies, clogged injectors, or weak fuel pump could be culprits. Clean everything, test under load.