Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
CB1100 Idle speed instability problem
See posts 567, 568 and the Curly Joe spreadsheet:

https://docs.google.com/spreadsheets/d/1...edit#gid=0

Why some bikes are affected is still a mystery, at least to me.

I did check fasteners and some electrical connections when I took delivery (habits from riding H-D).

I have over 10,700 miles since last November, ride in temps up to 114 F (10W/40 Castrol pure synthetic) , with long idles at signals in Las Vegas, 87 octane regular fuel (88 in Utah), spark plugs look new and zero issues, thus far.

I generally ride some distance, each time I start it and frequently at higher speeds, even if over 75 MPH are short bursts. Also, I frequently ride from ~2200 feet elevation to over 8,500 feet elevation (almost weekly).
The Engine Oil Temperature sensor resistance is 2.4 to 2.9 K ohms at 68F.
Higher resistance indicates a colder temperature.
If the connector / wiring has high resistance (such as from corrosion, which is why I asked about rain, or loose connection) the EOT output to the ECM will indicate that the engine oil is colder than actual.

Easy to disconnect, check and reconnect.
I'll check on this thread through tomorrow (Wed) but will be off-line Thu-Sat.

Max would be a good source for related testing, along with Peter Baron and Popgun, comprising the team that assisted Dave with his IACV issue.
Reply


Messages In This Thread
RE: CB1100 Idle speed instability problem - by SportsterDoc_imp - 07-31-2018, 10:07 AM

Possibly Related Threads…
Thread Author Replies Views Last Post
  idle problem update 1973cb750 37 2,148 05-12-2026, 08:38 PM
Last Post: rdprdp01
  Public Service Announcement - Speed Sensor Clip Gone in 60 7 896 10-22-2025, 02:11 PM
Last Post: Gone in 60
  New speed meter replacement ACE_IRA_imp 3 529 02-13-2025, 06:25 AM
Last Post: Lord Popgun
  Idle a little rough and miss fire when revved johnnyH_imp 3 433 09-15-2024, 12:16 AM
Last Post: Lord Popgun
  Chain or sprocket problem ? The Gecko_imp 14 1,301 07-30-2024, 10:05 AM
Last Post: Lord Popgun
  another idle thread Tom_imp 11 1,037 11-20-2023, 01:30 PM
Last Post: the Ferret
  O ring chain problem Mixagon_imp 7 678 10-17-2023, 07:28 AM
Last Post: Charlie Bravo_imp
  TPS Sourcing because of High Idle Obi-wan Kenobi_imp 38 2,806 09-14-2023, 10:08 PM
Last Post: Tev62
  Honda CB1100 Rough Idle Solution dickie1951_imp 56 4,407 09-06-2023, 01:36 AM
Last Post: the Ferret
  About the problem of high idling. (2014 cb1100ex) DDUMZI_imp 62 4,953 08-02-2023, 05:38 PM
Last Post: DDUMZI_imp

Forum Jump:


Users browsing this thread: 1 Guest(s)