Bike dying when you are slowing down to stop

[jjscsix]

Originally Posted by Sunny2020

I can’t make it do it, it has just happened.  Not in the last 100 miles.

Agree.  Mine is too sporadic.  I can ride it 50 miles without it doing then it might do it three times in ten miles.  I don’t feel it stall so I can’t pin down exactly how to duplicate it. 

[JG_XRT]

Originally Posted by Tab90925

I don’t think the sensor has anything to do with it but I’m happy the bike made it home considering last time I rode it the bike stalled 5 times

This is just speculation on my part, but consider that your speed sensor helps to determine when to cut power.

On my Gen 2, I can run the motor up to 10K rpm in 1st through 4th gears.

In 5th and 6th, engine RPM is limited to keep road speed at/under 125 mph- by cutting the ignition.

That's probably oversimplified, and there would likely have to be other issues that would contribute to the problem, but the gear position sensor sending bad info could be a part of the problem.

I'm curious if anyone who had this happen noted what gear the dash display indicated at the time.

[Whippet]

Mine stalled today while doing a slow speed car park manoeuvre. Annoyingly a bad camber meant the bloody bike went on its side. Minimal damage, but still very annoying. I’ve had a Triumph customer satisfaction survey and I’m going to have a good moan about it. I’ve been riding for 40 years and never had problems with stalling like this before.

[Tab90925]

Originally Posted by JG_XRT

This is just speculation on my part, but consider that your speed sensor helps to determine when to cut power.

On my Gen 2, I can run the motor up to 10K rpm in 1st through 4th gears.

In 5th and 6th, engine RPM is limited to keep road speed at/under 125 mph- by cutting the ignition.

That's probably oversimplified, and there would likely have to be other issues that would contribute to the problem, but the gear position sensor sending bad info could be a part of the problem.

I'm curious if anyone who had this happen noted what gear the dash display indicated at the time.

Very true. I have had that sensor fault 4 times but the most recent one was when it started the stalling issue. There were 8-9 codes when the tech scanned so it seemed the whole electrical system was throwing a fit. Rode about 100 miles today after the sensor swap and so far so good. Only consistent issue as of now is that the bike is hard to start the first ride of the day. Hoping that the stalling is over but based on the amount of people experiencing it, I doubt it.

[BykerBoyDes]

It’s happening to me on my 6 week old GT Explorer. Usually when I close the throttle when slowing down in 3rd or 2nd. The revs drop to zero and the engine cuts but does restart on clutch in and ignition application. No warning lights. Happened 4 times yesterday. Disconcerting when you have to coast across oncoming traffic to complete the turn.

It’s going in for dealer investigation next Thursday but I suspect the intermittent nature of the problem won’t make it easy to diagnose.

[jjscsix]

That sounds exactly like what mine does and another that a friend of mine did on a demo ride. I had my bike in for the 600 mile service yesterday and they found nothing.  But they did download a new ECU flash. 

I have also learned something else.  At idle when sitting at a traffic light I kept noticing the idle speed varying between 1,000 and 2,000 rpm.   What I learned yesterday is that it’s because I don’t keep the clutch pulled all the way in.  If you pull the clutch all the way in, then start letting it out without touching the throttle the revs will come up before it engages. 

This is something I’ve always done.  While at a light I like to have it out near the friction zone to make it easier to engage when the light turns.  I also don’t pull it in all the way when shifting.  Just enough for it to shift cleanly.  Again, I’ve done this for many years.  After I realized what’s going on I tried to be more conscious the rest of the day to pull it in all the way.   I’m wondering if this is related to the stalling. 

 I’ve also found that using the clutch to disengage the cruise control does not work well.  On every other bike I’ve had you just have to pull it in enough for it to begin to disengage the clutch and it will shut off the cruise.  On this bike it does not disengage the cruise quickly enough and the RPMs will rev up until the clutch is pulled all the way in to disengage the cruise.

This all leads me to believe the clutch lever may need adjusting, but on a hydraulic clutch you are really just adjusting the lever, not the clutch pull.  I need to study that a little more to see if that could help.

[Sunny2020]

Yes, the rev control feature can be startling if not used to it.  Seems like it is a “feature” that they should let you toggle on or off in my mind.  But it is there to help prevent stalling, a problem that triumph has received quite a few negative comments on in the moto media over the years. . .

The stalling part, for me, has nothing to do with the clutch position.  The 2 or 3 times it has happened clutch was all the way in and I was at maybe 4-5k when the clutch was brought in.  2nd gear I believe. I’ve mentioned it to my dealer to start the process.  Hasn’t happened recently but will see.  One thing I know they can fix on mine is under deceleration at 3k rpm it adds throttle on its own, a tiny blip, that is there and gone.  Every time, without fail.  Feels weird more than anything else.  No reason for it to be there.  Only happens in gear decelerating.

[BykerBoyDes]

Yes, it happened to me at the point the clutch was pulled in during deceleration at low speed with revs reducing down. I found I could get round it by applying a little throttle as I pulled the clutch in and slowed further to a stop thus stopping the engine stall. Of course, the very next ride nothing untoward happened at all. As I said.....intermittent. But no less frustrating.

I also do not think it is related to the amount of clutch pulled. I always fully pull the clutch and only use it to move from neutral to first or from first/second to neutral when stopped. The rest of the time I use the quick shifter. I am also aware of the feature that automatically increases the revs when you go from neutral to first....the "so called" anti-stall feature. On mine this increases the revs from 1,000 to 1,200 normally. However, at times my stationary idle revs can be as high as 1,700 for no apparent reason.

[jjscsix]

I agree with y’all about the clutch pull is not likely the culprit, but I think it’s good when trying to troubleshoot issues like this to share as much as possible looking for common input.

As mentioned above, my bike was Reflashed yesterday.  It did not do it on a 90 mile home yesterday from the dealer. Tomorrow I’ll be putting about 350 miles on it.

[Sunny2020]

All good, didn’t mean it as a contradiction.  I agree more info is better as people have similar issues for different reasons.

Just came back from a ride, love this bike.  Putting on some Mosko moto bags or a trip coming up.