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CB1100 Idle speed instability problem
#72
i have the same issue and i have tried a list of things listed as follows. Some might make sense but some don't. it's a hard and sometimes frustrating problem in which only happens when you're in a heavy traffic city ride and not when touring. here is what i have tested and i am now pretty set that the issue is not what it seems to be.

1. change the o2 sensors from original pair to a new pair = same issue
2. changed from o2 sensors to o2 eliminators = same issue
3. changed from aftermarket pipes back to original pipes = same issue
4. oil change from 10-40w / 5-30W / 5-40w and fresh k&n oil and intake filters = same issue

the only solution that seems to work is that you will need to loosen the throttle to give it more " freeplay " and while it does not sound logical to some. instead of instant throttle response upon twisted, some free play on the throttle somewhat solves the issue. it seems to be working for me as it has been a week or se it has yet to set on low rpm and stall. this observation is accurate as i commute to work on the bike daily, constantly faced with heavy traffic situations and weather in malaysia is an average of 36-37 C on average in the afternoon. The only issue now is upon trying all sort of methods and tricks, i seem to have damaged the throttle cable to slightly expose the cables and replacement orders from webike is on it's way from japan. so far so good. let me know if you have tried it and if it works for you as well.
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RE: 15’ CB1100 Idle speed unstable problem - by scooticus_imp - 05-19-2016, 11:00 PM

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