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CB1100 Idle speed instability problem
(04-03-2017, 09:25 AM)Magnus_imp Wrote: So I have the 1500rpm idle problem and I've replaced the Idle Air Control Valve (IACV) and now the engine oil temperature sensor (EOT?) as well. I also did the throttle position reset thing where you open and close the throttle a few times with the key on. So far no real change.

The bike will actually idle perfectly for a few minutes once it gets up to temperature. But then after a few more minutes of riding it goes back up to 1500rpm idle and stays there. I can't seem to figure it out. I wish I had an oil temp gauge so I could see if it's oil temperature related. Do these bikes have a thermostat for the oil cooler or anything? I wonder if the motor is getting too cold or (less likely) hot?

Hi Magnus. I am in San Diego also, with the same problems. I replaced my EOT sensor with no luck also. However, when I unplugged the EOT sensor the bike ran perfectly - maybe you can try this?

If you saw my earlier post, my WFO run "seems" to have fixed my bike. I have taken the bike on several short (less than 60 mile round trip) runs and ridden it around town and it has been running the best it ever ran. Don't ask me to explain how or why, because I don't understand what could have changed. But, try disconnecting your EOT sensor (when the engine is off) and see what happens.
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RE: 15’ CB1100 Idle speed unstable problem - by Dave_imp - 04-14-2017, 10:31 AM

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