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CB1100 Idle speed instability problem
Dave

Sorry for the delay in response, but wife and I are helping my son move.
After riding 465 miles yesterday, it actually felt good to load and unload my truck a few times, today, between thundershowers!

I am geographically close to you, for mailing parts, but it is probably better to post close-up photos for many pairs of eyes to scrutinize. If you are not set up to post, then you are welcome to email them to me, Max, etc. and/or a moderator may post them for you.

When I managed an electric motor repair shop, we were a factory warranty station for many manufacturers, such as Baldor, GE, Toshiba, etc. but finding a smoked defective winding, versus all windings overloaded or 2/3 of the windings cooked from single phasing a 3 phase motor or defective bearing was fairly easy. It was also easy to see if a shaft broke on a belt driven application, from an over-tightened belt. However, I am not optimistic about seeing something on your IACV.

If there is no scuffing on the piston at any point, indicating possible periodic binding, I would carefully examine the threaded shaft and "nut" to see if there is any wear or damage...is it possible for shaft to turn and piston not move as it should? If the stepper windings were an issue, I would expect a DTC.

Also, due to its position upon removal, as you described, I wonder how that can be explained.

Sorry to not be of more help.

Back to moving, in the morning, but will check back as soon as practical.
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Messages In This Thread
RE: CB1100 Idle speed instability problem - by SportsterDoc_imp - 05-01-2018, 10:00 AM

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