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CB1100 Idle speed instability problem
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jedd Offline
Running Like a Top

Austin, TX
Posts: 290
Joined: Dec 2015
Post: #11
RE: 15’ CB1100 Idle speed unstable problem
I can understand why the honda shop did what it did instead of what you're suggesting.

THey took the path of least resistance and got the job done with the least amount of risk. Go in once, and replace the whole kit and caboodle.

I would have done the same. It's good business. Especially when it's Honda who's footing the bill for the warranty claim.

2014 HONDA CB1100 DLX
2014 SUZUKI VSTROM DL650 Adv
2013 SUZUKI BURGMAN 400
2010 Husaberg FE390
2009 BETA Evo 290
2005 Honda CR250R
03-08-2016 09:58 AM
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ericlo69 Offline
Break-In Period

Taiwan
Posts: 16
Joined: Mar 2016
Post: #12
RE: 15’ CB1100 Idle speed unstable problem
Cormanus, Popgunm, Kmoney and Jedd, Thanks for your replies.

HONDA Taiwan established the “HONDA Taiwan Motorcycle” in Apr’15; it means a lot of CB1100s were from parallel import trader.
The “dealer” in my previous posts means the parallel import trader, not “HONDA Taiwan dealer”, sorry for the confusing.
This case is in parallel import trader, and this bike is under trader’s warranty. Bike owner did not allow seeing technician’s actions during troubleshooting, we have no idea what has been replaced exactly.
A lot of owners are so care about this idle problem; it is not “cheap” troubleshooting, if the whole “Throttle Valve Assy.” is the root cause once bike is out of warranty. Some owners suggest that HONDA shall identify the root cause then recall the bikes!

As I mentioned that several CB1100 got idle speed unstable problem, and these bikes are pretty new (less than few thousands mileage); and I assumed the failure part is idle motor; how come this motor died so quickly? Defect parts?
Another guess, is it possible that the root cause is the “carbon deposit” on the motor?
03-08-2016 08:26 PM
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Cormanus Offline
Moderator

Queensland, Australia
Posts: 11,334
Joined: Dec 2013
Post: #13
15’ CB1100 Idle speed unstable problem
Erico, is it only the 2015 models that are having problems?
(This post was last modified: 03-08-2016 10:17 PM by Cormanus.)
03-08-2016 10:17 PM
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ericlo69 Offline
Break-In Period

Taiwan
Posts: 16
Joined: Mar 2016
Post: #14
RE: 15’ CB1100 Idle speed unstable problem
Original model is introduced in Y2010, and revised model is introduced in Y2014; the major differential is the gearbox (Y2010:5 speeds; Y2014: 6 speeds).
So far we found that only revised model (14'~) has idle speed problems.

By the way, some other owners said Idle speed would drop to 500rpm, ONLY in summer time.

(03-08-2016 10:17 PM)Cormanus Wrote:  Erico, is it only the 2015 models that are having problems?
(This post was last modified: 03-08-2016 11:44 PM by ericlo69.)
03-08-2016 11:24 PM
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popgun Offline
Lives On Two Wheels

Virginia Beach
Posts: 6,203
Joined: Apr 2013
Post: #15
RE: 15’ CB1100 Idle speed unstable problem
Only in Summer time? I wonder if the temp sensor is out of spec.

If you come to a fork in the road, take it!
2013 CB1100
2012 ST1300
03-09-2016 05:17 AM
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ericlo69 Offline
Break-In Period

Taiwan
Posts: 16
Joined: Mar 2016
Post: #16
RE: 15’ CB1100 Idle speed unstable problem
Another clue:
in Taiwan CB1100 (after 2014) has two major models; one has two exhaust pipes (model name: CB1100EX) and another one has only one exhaust pipe (model name: CB1100).
Mostly idle speed problem happened in CB1100EX model.
One owner doubt:
CB1100 & CB1100EX have different computer program, and CB1100 has one oxygen sensor only, CB1100EX has two oxygen sensors.
Is it possible that CB1100EX’s computer program could not handle the signals of two sensors sometimes?!
03-10-2016 10:55 PM
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Tom JAN Offline
New To The Forum

taiwan
Posts: 1
Joined: Mar 2016
Post: #17
RE: 15’ CB1100 Idle speed unstable problem
http://cb1100forum.com/forum/showthread....light=idle

The same problem
03-15-2016 01:11 PM
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ericlo69 Offline
Break-In Period

Taiwan
Posts: 16
Joined: Mar 2016
Post: #18
RE: 15’ CB1100 Idle speed unstable problem
Update: replaced the whole “Throttle Valve Assy.” already; seems problem was solved.
04-03-2016 03:28 AM
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The ferret Offline
Forum Moderator

Ohio
Posts: 19,833
Joined: Apr 2013
Post: #19
RE: 15’ CB1100 Idle speed unstable problem
Glad it got sorted out.

.
2014 DLX and 2006 ST 1300

It doesn't matter what I ride, where I ride, or how far I ride... it only matters THAT I ride...every day...Ferret
04-03-2016 04:24 AM
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uscgmac Offline
Running Like a Top

Long Island N.Y.
Posts: 628
Joined: Mar 2015
Post: #20
RE: 15’ CB1100 Idle speed unstable problem
I have a friend with a 2014 standard and hes having similar problems. His bike is ideling at 1500 rpms all the time. Even after riding for a while. He has about 4500 miles on the bike. He is still under warranty and bringing it back to the dealer.

2014 CB1100
2014 Harley Davidson Ultra Classic
04-03-2016 12:59 PM
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