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CB1100 Idle speed instability problem
Whilst i was reading the german forum's post on the 256000 km cb1100 i came across this description, i will post the german and translated version and put it out here for your perusal, the owner had an issue with the iacv and repaired it by cleaning the worm shaft on the iacv, he claims it has not re-occurred since;

ich war damals bei meinem Hondahändler. Anfang haben die mir nicht geglaubt, da der Fahler nicht stabil reproduzierbar war und in sehr unterschiedlichen Situationen auftrat. Ich habe meine CB dann dem Meister für zwei Tage überlassen und er ist damit dann seinen Arbeitsweg gefahren – und hat dieselben Probleme wie ich. Der anfängliche Verdacht auf defekte Benzinpumpe konnte durch einen provisorischen Austausch auf Garantie ausgeschlossen werden.

Die Ursache war die verschmutze Schnecke beim Leerlaufsteller und deshalb wurde die Leerlaufsteuerung nicht friktionsfrei umsetzt. Nach der Reinigung waren die Probleme bei meiner CB weg und sind auch nie wieder aufgetreten.

Ich weiß aber auch von einem anderen CB-Fahrer, dass ein Software-Update 2017 sein Leerlaufproblem gelöst hat.

Viele Grüße

Thorsten


I was at my Honda dealer at the time. At the beginning they didn't believe me, because the error was not stable and reproducible and occurred in very different situations. I then left my CB to the foreman for two days and he went to work with it - and has the same problems as me. The initial suspicion of a defective fuel pump could be ruled out by a provisional exchange on guarantee.
The cause was the dirty worm on the idle actuator and therefore the idle control was not implemented without friction. After cleaning, the problems with my CB were gone and never came back.

The writer also claims that a 2017 cb was repaired with a software update, just like wisedrum's one.

And a link to the page in question, it is quite a way down and of course in german;
http://motorrad-und-touren.de/motorraede...cb-1100-ex
( Link opens in a new tab )

Just wondering if the same can be done by removing one of the rubber hoses on the top of the iacv housing and squirting some brake cleaner into the alu pipe whilst operating the red engine stop switch to motivate the iacv back and forth.



Just for your information.
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Messages In This Thread
RE: CB1100 Idle speed instability problem - by max - 03-10-2021, 08:02 AM

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