Tenere Scared me the other day!

[WJBertrand]

I was splitting lanes on my way home the other night and when I went to change gears, the engine just stopped as I pulled in the clutch. This engine stall thing seems to happen randomly every few months, probably less than 10 times since I bought the bike in summer '15. It usually happens when riding at low speeds or decelerating like approaching a stop sign or signal. I was probably doing 30-35 MPH. I Usually just pop the clutch to bump restart the engine in such cases and carry on. This time when I popped the clutch however the rear wheel started sliding and veering to the side instead. Holy shit! I did not expect that! There’s not a lot of space to be going sideways when splitting! I had to quickly pull the clutch back in to get the bike straightened up. Whew! Didn’t touch any cars luckily. My next thought, and second scare, was that perhaps the engine had locked up or failed catastrophically in some way. Finally, I hit the starter and I was relieved when it fired right back up and ran totally normally, as though nothing had happened, the rest of the way home, including the stop at the store for some new underwear. Very strange.

I’m thinking maybe there was something slippery on the road right at the spot where this happened? Conditions were clear, dry and temperatures were in the low 70s.

 

[SHUMBA]

I was splitting lanes on my way home the other night and when I went to change gears, the engine just stopped as I pulled in the clutch. This engine stall thing seems to happen randomly every few months, probably less than 10 times since I bought the bike in summer '15. It usually happens when riding at low speeds or decelerating like approaching a stop sign or signal. I was probably doing 30-35 MPH. I Usually just pop the clutch to bump restart the engine in such cases and carry on. This time when I popped the clutch however the rear wheel started sliding and veering to the side instead. Holy shit! I did not expect that! There’s not a lot of space to be going sideways when splitting! I had to quickly pull the clutch back in to get the bike straightened up. Whew! Didn’t touch any cars luckily. My next thought, and second scare, was that perhaps the engine had locked up or failed catastrophically in some way. Finally, I hit the starter and I was relieved when it fired right back up and ran totally normally, as though nothing had happened, the rest of the way home, including the stop at the store for some new underwear. Very strange.

I’m thinking maybe there was something slippery on the road right at the spot where this happened? Conditions were clear, dry and temperatures were in the low 70s.

Hmmm..disturbed to hear that. I've got almost 18,000 km (12,000) on my 2018 ES and have never experienced a stall, other than when in a tight turn and I got too greedy with the clutch, es culpa mea.
I'd have a certified Yammy mechanic look into this one.
Wondering if anyone else has experienced this??
SHUMBA

Sent from my SM-T380 using Tapatalk

 

[Tenman]

get you a gen1

 

[regder]

Hmmm..disturbed to hear that. I've got almost 18,000 km (12,000) on my 2018 ES and have never experienced a stall, other than when in a tight turn and I got too greedy with the clutch, es culpa mea.
I'd have a certified Yammy mechanic look into this one.
Wondering if anyone else has experienced this??
SHUMBA

Sent from my SM-T380 using Tapatalk

Had my first unexpected stall a couple weeks ago, after about 20k km. Same circumstances as the OP described, except I just restarted with the start button instead of trying to bump start.

I assume it's some sort of fuel programming issue that allows the idle to drop to the point of a stall under certain conditions.

 

[SHUMBA]

Had my first unexpected stall a couple weeks ago, after about 20k km. Same circumstances as the OP described, except I just restarted with the start button instead of trying to bump start.

I assume it's some sort of fuel programming issue that allows the idle to drop to the point of a stall under certain conditions.

Thanks, your explanation makes sense. But fuel injection should not allow this to happen.
The only change to my bike is: after it sits for 2 or 3 days , it doesn't start on the first attempt. I roll the throttle as I crank the engine, which helps.
I suspect that the fuel either evaporates or runs back somewhere.
SHUMBA

Sent from my SM-T380 using Tapatalk

 

[Goldwing]

The stalling thing used to happen on my 2014...one of the many things I ended up hating about the bike and resulted in me buying a 2019 R1250GS...........

 

[Riley8]

I was splitting lanes on my way home the other night and when I went to change gears, the engine just stopped as I pulled in the clutch. This engine stall thing seems to happen randomly every few months, probably less than 10 times since I bought the bike in summer '15. It usually happens when riding at low speeds or decelerating like approaching a stop sign or signal. I was probably doing 30-35 MPH. I Usually just pop the clutch to bump restart the engine in such cases and carry on. This time when I popped the clutch however the rear wheel started sliding and veering to the side instead. Holy shit! I did not expect that! There’s not a lot of space to be going sideways when splitting! I had to quickly pull the clutch back in to get the bike straightened up. Whew! Didn’t touch any cars luckily. My next thought, and second scare, was that perhaps the engine had locked up or failed catastrophically in some way. Finally, I hit the starter and I was relieved when it fired right back up and ran totally normally, as though nothing had happened, the rest of the way home, including the stop at the store for some new underwear. Very strange.

I’m thinking maybe there was something slippery on the road right at the spot where this happened? Conditions were clear, dry and temperatures were in the low 70s.

I had same issues with my 2017 S10 CA model. I felt these were lean symptoms that were heightened by the light flywheel effect of the S10 engine. I did the 3/4 r. TB adjustment with a TB sync; didn't fix the issue. Talk to two different dealers and they were clueless. After seeing someone mention the Booster Plug on the owners forum I ordered one. This has fixed the issue of random stalling and the overall performance is smoother and less jerky both sport and touring modes.

 

[steve68steve]

I stalled two or three times recently at a stop. Just off idle there's a weird spot where it seems like the fuel just shuts off for an instant.

I usually pull out with just enough revs that when the clutch grabs, the additional load will bring me down to something sedate like 2500 RPM. After sitting stalled at a green light with traffic behind me, I've started reving a bit higher at launch. This successfully prevents stalling, but it doesn't seem right.

The funny thing is I vaguely remember having this happen a few times years ago. I bought the bike new in 2014 in PA, moved to FL for 4 years, and now I'm in NH. I wonder if it tracks with temp or pressure: I never had any fueling issues above 70deg F at sea level.

2014 with 47k miles.

 

[jbrown]

I believe the S10 cuts off fuel on deceleration to improve MPG. It seems like a pretty difficult problem to get the fuel turned back on quickly when you pull in the clutch. A flaky clutch switch, or other sensor could easily confuse the ECU logic. Some flashes can disable the decel fuel cut off.

 

[WJBertrand]

My bike is flashed and it allegedly defeats this fuel cut function. It would take a year or more of riding to pronounce a fix because it happens so infrequently. I even tried duplicating the conditions as best I could on purpose and could not get it to stall.

 

[escapefjrtist]

How old are the plugs? My '12 is very sensitive to starting and idling with old plugs.

My '12 has stalled once [very early with a green engine] since I picked it up new. Did the 3/4 turn out trick just for grins...can't say that did much that was noticeable. The '12 also has the latest AVC flash.

Funny thing, on a recent ride my riding buddies FJR did the stall thing when pulling in the clutch. We traced that to a too low idle speed along with the TBS off. After adjusting the air screws equally out and re-syncing, the idle has returned to normal and no more stalling. It's a well used FJR too, 105k.

YMMV

~G

 

[ballisticexchris]

I'm happy the outcome was ok Jeff. Good reaction on your part!!

 

[Jeff Milleman]

I feel kind of out of touch Riley8 , but what do you mean by Booster Plug?

 

[WJBertrand]

How old are the plugs? My '12 is very sensitive to starting and idling with old plugs.

My '12 has stalled once [very early with a green engine] since I picked it up new. Did the 3/4 turn out trick just for grins...can't say that did much that was noticeable. The '12 also has the latest AVC flash.

Funny thing, on a recent ride my riding buddies FJR did the stall thing when pulling in the clutch. We traced that to a too low idle speed along with the TBS off. After adjusting the air screws equally out and re-syncing, the idle has returned to normal and no more stalling. It's a well used FJR too, 105k.

YMMV

~G

Plugs were changed, throttle bodies balanced and valves adjusted at 58K. The bike now has 66k, so no too old.


Sent from my iPhone using Tapatalk Pro

 

[Riley8]

I feel kind of out of touch Riley8 , but what do you mean by Booster Plug?

Google "Booster Plug". This device fits between the ECU and the air box. The product is made in Denmark. I have recommended this to Forum members a number of times and I don't see it getting any traction with the forum.
Like WJ Bertrand said in his post, the engine stalls occasionally with no warning and is difficult to duplicate. My experience tells be this is caused by a lean fuel ratio and the light flywheel effect of the S10 engine which doesn't carry the engine through little hiccups at low rpm. Per their (Booster Plug) claims, the device tricks the ECU into thinking the air temperature is much colder outside and richens the fuel mixture approx. 6% (see their website for more accurate info). The good thing about the Booster Plug is 1) Sold with money back guarantee (doesn't do US owners a lot of good since it comes from Denmark), 2) it installs easily and doesn't change the ECU programming. The machine can be put back to stock condition easily.
I have years of experience with carbureted motors but little with fuel injection. Correct me if I'm wrong but saying you had your machine Flashed is like saying you re-jetted the carb. It can be good or bad depending on the technician who did the work.
My experience with the Booster Plug was very good. Do other Forum members have any experience with this product on their machine?

 

[Cycledude]

Very sorry to hear your 2015 Tenere has been stalling , only 13,000 miles on my 2018 ES and thankfully it has never stalled .

 

[elricfate]

The Booster Plug is a recalibrated temperature sensor that tricks your ECU into thinking the ambient temps are lower than they actually are. It's essentially making your mixture rich all the time.

 

[LostDonkey]

This happened to me a couple of times till I had my ECU re-flashed. Aside from my bike since riding so much better, it’s never done it again.

 

[RicoChet]

This kind of thing is actually more common then you think. I've had this exact same thing happen to me on my 2012 Triumph Rocket 3 and It also happened recently on my 2007 Yamaha MT-01. I don't actually know why it happens, but it happens. Everything seems to work fine as soon as you hit the starter button.

 

[Clawdog60]

Thanks, your explanation makes sense. But fuel injection should not allow this to happen.
The only change to my bike is: after it sits for 2 or 3 days , it doesn't start on the first attempt. I roll the throttle as I crank the engine, which helps.
I suspect that the fuel either evaporates or runs back somewhere.
SHUMBA

Sent from my SM-T380 using Tapatalk

Have you tried just cycling the key several times before hitting start button? Mine hard starts occasionally if I’ve purchased less than desirable fuel.