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CB1100 Idle speed instability problem
The IACV has been the conclusion for a couple years.

http://cb1100forum.com/forum/showthread....#pid189695

Post 638 (Dec 2017) see items 1 & 2

http://cb1100forum.com/forum/showthread....#pid252433

Post 1012 (Oct 2019)

"From reviewing recent posts on this thread and the Curley Joe Spreadsheet, I am inclined to conclude that most issues are IACV and/or ECM program related, with the exception of a damaged TPS wiire and maybe one EOT."

With the stepper motor resistance checks in spec, perhaps blowby containation is an issue. If so, cleaning may be all that is needed, but comsidering the labor investment, replacing IACV may still be wise.
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RE: CB1100 Idle speed instability problem - by SportsterDoc_imp - 04-30-2020, 10:01 AM

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