CB1100 Idle speed instability problem

[JustCruising_imp]

I took my EX in for it's first annual service today. I had pre warned the dealership about this issue, which I myself have not experienced, and gave them the details of the re-map that Beardy put up. They were very onboard when I got there, had spoken with Honda UK, and had the new software available. However Honda strongly advised to only re-map if the issue is apparent, otherwise leave well alone as it could itself cause other problems and is non reversible. So mine was left as is, but at least I know it's available if needed.
The service manager talked through a number of other possible causes, including riding style. He suggested that the notion of a throttle WFO ride could indeed have some value, making sure the engine is at operating temperature first. Buying a second hand machine and having a different style of ride/throttle use from the previous owner is he said a known phenomena with modern ECU's that can 'learn' a riders ways.
He was just throwing his experience into the pot I guess.

[Riko_imp]

riding style, Lol

anyway, be sure to show him my video of the issue (thats resolved by simply changing the whole throttle body, under warranty)





there is nothing more clear to show an issue like a good video
images say more than words

[JustCruising_imp]

riding style, Lol

anyway, be sure to show him my video of the issue (thats resolved by simply changing the whole throttle body, under warranty)





there is nothing more clear to show an issue like a good video
images say more than words

I think he was referring to throttle use.

[Riko_imp]

riding style, Lol

anyway, be sure to show him my video of the issue (thats resolved by simply changing the whole throttle body, under warranty)





there is nothing more clear to show an issue like a good video
images say more than words

I think he was referring to throttle use.

I think he was referring to throttle use.
I know

but even the slightest hint of tought of linking riding style as a possible cause of the throttle issue is absurd

all this evolution in automotive and electronical technology such as Fuel Injection, makes his conclusion a joke tbh, especially when you think about it

sounds like a desperate mechanic to me

[the Ferret]

I don't know Riko... even in the old days if you bought a car from an "old" person who had driven it like the proverbial old lady going to church, you had to blow them out before they would run right. I remember my older brother in the 50's pouring water down the carb of a running car while holding the throttle open and all manner of crud billowing out the tailpipe.It may have been wive's tale that it did something, but guys of that era swore by it.

The car mfgs today will tell you a car learns your driving habits and responds accordingly. Don't see why a motorcycle wouldn't. Computers are computers.

[Nortoon_imp]

I can remember my older brothers using a gas additive to clean carbon out their car motors. My older brother used in on the street where we lived and took he** from everyone for the smoke it produced. The other brother took out to a quiet road before adding it. Sometimes being first to try something is not always best.

[JustCruising_imp]

riding style, Lol

anyway, be sure to show him my video of the issue (thats resolved by simply changing the whole throttle body, under warranty)





there is nothing more clear to show an issue like a good video
images say more than words

I think he was referring to throttle use.

I think he was referring to throttle use.
I know

but even the slightest hint of tought of linking riding style as a possible cause of the throttle issue is absurd

all this evolution in automotive and electronical technology such as Fuel Injection, makes his conclusion a joke tbh, especially when you think about it

sounds like a desperate mechanic to me

I think he was referring to throttle use.
I know

but even the slightest hint of tought of linking riding style as a possible cause of the throttle issue is absurd

all this evolution in automotive and electronical technology such as Fuel Injection, makes his conclusion a joke tbh, especially when you think about it

sounds like a desperate mechanic to me
Well I guess you'd better just go sort it yourself then.

There's always those that know best. I was just passing on his comments, and what Ferret says above is in fact just what this guy said to me re the machine 'learning' it's operator. Change the operator and there may be problems. He went on to say that the bike manufacturers are quite open about their fuel injection systems being technically behind those of the car industry.
He was just talking, thinking out aloud and calmly throwing out ideas and possible causes, certainly nothing desperate about him and he certainly wasn't desperately trying to skirt the issue.

[Rolls_imp]

After 25,000 trouble-free miles, my 2013 exhibited the very annoying high idle problem for four months (and over 3000 miles) following a single afternoon of the stalling similar to Riko's posted video. So annoying.

During a full track day at Laguna Seca, flogging it for 160 miles and however many laps that is, the high idle problem disappeared. That was November 13. So far, 5 months and about 5K more miles it hasn't returned. Please note: I'm only relating the facts of my situation so the forum has this info to add to our knowledge of this frustrating issue that's affected a few.

I make no claims of understanding the cause or the solution to the problem. I am not asserting causality. I'm simply relating the facts of my particular case. Hope it helps others.

[Lord Popgun]

This problem is getting curiouser and curiouser...

[Aka Tsubasa_imp]

I just put money down on a new 2017 EX and this issue has me a bit spooked. Enough that I decided to buy the 5 year extended warranty. Seems like one throttle body replacement would easily cover the cost.