SportsterDoc
Road warrior
Dave_imp said:
CB1100 Idle speed instability problem
- Thread starter ericlo69_imp
- Start date
mike85_imp
First service completed
Ugh,please don't tell me my brand new bike has the dreaded idle issue. It doesn't even have 300 miles yet. The problem started the other day. The first video was taken when it started. Videos 2 and 3 were taken tonight. The bike idles like this when started, but returns to 1000 rpms after riding for a little while.
I've skimmed the thread - is there a definitive answer from Honda as to the underlying root cause?
I've skimmed the thread - is there a definitive answer from Honda as to the underlying root cause?
SportsterDoc
Road warrior
Started cold or started hot?
~1500 RPM is a normal cold start.
~1000 RPM is normal idle when fully warm.
Pdedse posted some observations in post 786.
My 3 cents in post 775
If you do actually have an issue, I would disconnect and then reconnect EOT, TPS and IACV...to be sure connections are good.
When mine was uncrated, last November, it needed a new battery, but has no issues in almost 10,000 miles
~1500 RPM is a normal cold start.
~1000 RPM is normal idle when fully warm.
Pdedse posted some observations in post 786.
My 3 cents in post 775
If you do actually have an issue, I would disconnect and then reconnect EOT, TPS and IACV...to be sure connections are good.
When mine was uncrated, last November, it needed a new battery, but has no issues in almost 10,000 miles
mike85_imp
First service completed
Cold start. It’s always cold started at 1000 rpms until now. It is a new bike so maybe it’s just getting broken in?!?SportsterDoc_imp said:
max
Road warrior
Yes, totally hopeless case Mike, just kidding.
Congratulations on the new bike, looks fantastic and it is good to see that you are looking and listening after it.
Fortunately for you the prognosis is very hopeful and life expectancy of the bike is over 100.000 miles as described by another member ( fan ) i have to admit that you are the first one to bring this up and even complement the post with no less than 3 video's.
What is happening ( and you may not have started the bike cold before ) is that Honda have replaced the old fashioned choke with an automatic system which works in all temperatures and makes the engine idle at 1500 rpm when cold-started, depending on the temperature outside it will regulate the rev's back to around 1000 rpm when the bike reaches it's operating temperature.
So what you show on the video is perfectly normal and so is the sound of the engine.
Thanks for your concern and now go and enjoy the bike to get to the first service ( 600 miles i think ) at which the oil and filter needs to be replaced ( to remove the small particles ) and the next obvious question of what oil etc to use.
Have fun.
Congratulations on the new bike, looks fantastic and it is good to see that you are looking and listening after it.
Fortunately for you the prognosis is very hopeful and life expectancy of the bike is over 100.000 miles as described by another member ( fan ) i have to admit that you are the first one to bring this up and even complement the post with no less than 3 video's.
What is happening ( and you may not have started the bike cold before ) is that Honda have replaced the old fashioned choke with an automatic system which works in all temperatures and makes the engine idle at 1500 rpm when cold-started, depending on the temperature outside it will regulate the rev's back to around 1000 rpm when the bike reaches it's operating temperature.
So what you show on the video is perfectly normal and so is the sound of the engine.
Thanks for your concern and now go and enjoy the bike to get to the first service ( 600 miles i think ) at which the oil and filter needs to be replaced ( to remove the small particles ) and the next obvious question of what oil etc to use.
Have fun.
mike85_imp
First service completed
Thank you, Max. Is it obvious I’m a newb to the bike (and modern fuel injection)?max_imp said:
I’m also happy to hear my paranoia has added something to this thread
This forum is such a fantastic resource to guys like me who overthink things. With regards to the 600 mile service, I’ve already posted elsewhere asking what kind of honda oil to use, air filters, etc, etc.
Thanks again.
the Ferret
Road warrior
Ride more...worry less
indeed, Mike, after watching your vids, there is simply nothing to worry about, because, there is no issue.
Lol, I dunno why you are even going into panic mode, your bike is steady at 1000rpm, its like the needle isn't moving at all, thats what you want!
1000rpm is, if I remember well, the normal idle rev range when the bike is warmed up.
The bike didnt even go under 1000 rpm, isn't unsteady at idle, and hasn't stalled....
When you encounter what I have encountered:
than you can worry....
Just ride your smooth Honda!
Lol, I dunno why you are even going into panic mode, your bike is steady at 1000rpm, its like the needle isn't moving at all, thats what you want!
1000rpm is, if I remember well, the normal idle rev range when the bike is warmed up.
The bike didnt even go under 1000 rpm, isn't unsteady at idle, and hasn't stalled....
When you encounter what I have encountered:
than you can worry....
Just ride your smooth Honda!
max
Road warrior
Riko thanks for your valued input and help with this problem, i think we are getting close to settling this thing.
Good to still have you and the new owner around.
Still like your only comment in the vid; g...mme; very appropriate.
beste wensen; max.
Good to still have you and the new owner around.
Still like your only comment in the vid; g...mme; very appropriate.
beste wensen; max.
mike85_imp
First service completed
Very true. Now I just need the rain to stop for more than a dayThe ferret_imp said:
peterbaron
Road warrior
+1+1+1The ferret_imp said:
pb
...I noticed my new 2014 idles at 1000, not 1100 like the 2013...should I worry:huh:
pb
the Ferret
Road warrior
+1+1+1peterbaron_imp said:+1+1+1The ferret_imp said:
pb
...I noticed my new 2014 idles at 1000, not 1100 like the 2013...should I worry:huh:
pb
pb
and this is no way intended to make light of those who have had any real idle issues with their bikes.
SportsterDoc
Road warrior
Dave
Your bike still running well?
Your bike still running well?
SportsterDoc
Road warrior
Dave emailed that his bike is running well, with over 1,000 miles on it since he replaced the IACV.
max
Road warrior
AHA ! :banana::biker::clap::beerchug::excited::hello:
:celebrate::banana::worship:
Thanks for the update doc!
:celebrate::banana::worship:Thanks for the update doc!
Isn't he talking to us any more?SportsterDoc_imp said:
peterbaron
Road warrior
Isn't he talking to us any more?Cormanus_imp said:Isn't he talking to us any more?SportsterDoc_imp said:
...it seem that he is running 2nd 1000 miles
SportsterDoc
Road warrior
Isn't he talking to us any more?peterbaron_imp said:Isn't he talking to us any more?Cormanus_imp said:Isn't he talking to us any more?SportsterDoc_imp said:
...it seem that he is running 2nd 1000 miles
...it seem that he is running 2nd 1000 miles
Probably, but he was out of town.
Barkingshins_imp
Running like a top
Unfortunately, my '14 DLX seems to be among the unlucky few who are having high-idle issues. Ugh! On the (perhaps?) plus side, I've had no low-idle or stalling issues. After riding around town and getting the engine good and warmed up, it consistently wants to idle at just under 1500 RPMs and rarely, if ever, drops down to the spec'd 1100.
There's already been plenty of discussion about what the likely issue is (faulty IACV) and how to fix it (replace IACV), so I won't go into that here. My question is this...
Two friends and I are embarking on a road trip around Lake Superior in a week and a half. Do I absolutely need to get this resolved before we leave? or is it just a nuisance that I can live with until after we get back? I'm a reasonably accomplished garage mechanic and intend to DIY this. But how urgent is it? Please advise. Thanks.
There's already been plenty of discussion about what the likely issue is (faulty IACV) and how to fix it (replace IACV), so I won't go into that here. My question is this...
Two friends and I are embarking on a road trip around Lake Superior in a week and a half. Do I absolutely need to get this resolved before we leave? or is it just a nuisance that I can live with until after we get back? I'm a reasonably accomplished garage mechanic and intend to DIY this. But how urgent is it? Please advise. Thanks.
SportsterDoc
Road warrior
Since high idle does not cause the engine to die, I would consider it just an annoyance.
Not all low idle issues may be the IACV.
High idle may not have the same cause(s) as low idle.
For example, it may idle high if the ECM thinks the temperature is colder than it actually is.
Be good to first check electrical connections.
How many miles?
Ridden much in the rain?
Parked in rain?
See DTC info on FSM pages 5-15 & 5-16.
Not all low idle issues may be the IACV.
High idle may not have the same cause(s) as low idle.
For example, it may idle high if the ECM thinks the temperature is colder than it actually is.
Be good to first check electrical connections.
How many miles?
Ridden much in the rain?
Parked in rain?
See DTC info on FSM pages 5-15 & 5-16.
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