02-20-2018, 10:00 AM
(02-19-2018, 04:20 PM)Dave_imp Wrote: Hello to all you great guys working on this low idle problem! First, thank ALL of you for all of your support. I will clean the IACV electrical connection ASAP (this week) per the instructions emailed to me from Doc.
Been working O.T., and had to run to three different stores this evening to find a new battery for my P.C., and just got that replaced. It's after 10:00 PM and I just logged on. The VFR800 work can wait until I clean the CB1100 IACV connection, but I really need to finish the VFR fork rebuild and steering head bearings replacement before I tackle the CB1100 IACV replacement. The VFR is apart in the garage, and I am out of room to work.
What do you guys make of the constant sound (IACV cycling?) I heard when my bike was running seriously bad last Saturday, when it was stalling? Do you think maybe this indicates the valve was sticking? Does hearing the sound possibly mean that the sensors and ECM are operating correctly by sending a signal to the IACV?
What do you think about the condition I described where the low idle condition seems to be temporarily cured now when I turn the ignition key off and then back on again (I leave it off for about 5 seconds before turning it on). Does this disprove the sticking IACV theory?
The Factory Service Manual (FSM) has a procedure for checking the operation of the IACV (I read it several months ago, and don't remember the exactly details right now). If the valve is operating correctly (per the FSM check), is there a good way to determine if the valve is sticking? Can I insert it into the throttle body and make an accurate judgment?
Thanks again guys, I really appreciate all of you.
FSM pages 5-41 & 5-42 are condensed in post 22 of this thread:
[url=http://cb1100forum.com/forum/showthread.php?tid=12203&page=3]http://cb1100forum.com/forum/showthread....203&page=3
To check for sticking, the IACV should be removed and the piston to port clearance checked and any air passages cleaned.
Suggest cycling connector, inspect wiring and do 5-41 to 5-42 tests before disassembly (air box is in the way of access to replacing IACV)
+1 / ditto to all aspects of Max's post 155.
