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CB1100 Idle speed instability problem
(01-11-2017, 08:37 AM)The ferret_imp Wrote: Well we are just trying to talk this out, get a handle on what may be causing the issue.

I like who ever it was's theory that maybe this is related to an old or weak battery, that the bike needs a strong battery for electronic doo dads to function properly. But that is just a guess like 10 other guesses at this point. Until we find a common correlation, and there SHOULD be one, for the same problem to arrise on different continents and different models, so rare and random. We just have to keep thinking, asking questions, search for similarities etc. maybe we can stumble upon the issue.

French board, German board.
Taiwanese Facebook page, Thai Facebook page.

I've read all topics and threads on all of those boards and encountered all kinds of suggestions, none worked.
The only ones that worked, were the ones where I read that they brought the bike in to replace the whole throttle body, so unfortunatelly, there is no easy solition (for the specific stalling problem on the EX models)

Could be the issues on non EX bikes are different and thus may have easy solutions.
But solely talking about the EX issues, there is no solution, yet, but to replace the whole throttle body under warranty.
(01-11-2017, 12:19 PM)Flynrider_imp Wrote:
(01-11-2017, 01:58 AM)Riko_imp Wrote:
(01-10-2017, 12:52 PM)Flynrider_imp Wrote: Alright, now I'm confused. On the way home from work tonight, my '13 model started experiencing odd idle behavior.

After about 4 miles I decided to stop at the store to pick up a few things. As I entered the parking lot, I noticed it was idling at about 750 rpm. It slowly built back up to 1100 in about 5 to 7 seconds. I blipped the throttle and the rpms went back to 750, then slowly climbed back up to normal. It did it a few more times as I made my way through the the parking lot.

After 20 min. in the store, I came out and cranked up the bike and everything was back to normal. Numerous blips of the throttle and it settled right back to 1100 rpm. Same result for the few miles home.

I'm not sure what was going on, but I don't like it! Dodgy

look like the issues that plagues the EX models...except for the stalling...

after dropping did you blip more?
so, it did not stall on you when it was idling around that low 750rpm after a short blip?

No, I didn't try to blip the throttle when it was idling at 750 (assumed that would kill it). I just let it slowly climb back up to normal.

As for the battery theory, I'm running a 1.5 yr. old lithium battery. I checked it out when I got home and it's showing a full charge and the same resting voltage that it had when new. Load tested, it was well in the green zone.

My ride to and from work today was uneventful. I tried several times to make the idle drop, with no success. It ran perfectly.

The only maintenance items I'm aware of are the air cleaner. It's a bit overdue for replacement (by the calendar). I'll get to that this weekend and keep watching it.

No, I didn't try to blip the throttle when it was idling at 750 (assumed that would kill it). I just let it slowly climb back up to normal.
ow okay, just out of curiosity I'd like to know if that actually kills the bike.

In a real life situation that would happen in heavy traffic anyway...Undecided
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Messages In This Thread
RE: 15’ CB1100 Idle speed unstable problem - by Riko_imp - 01-12-2017, 02:07 AM

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