Idle air controllers

fogrider · Post by **fogrider** » Wed Feb 13, 2019 6:09 pm

My '45 still has a minor stumble at the same time the PGM light flashes (one quick blink) until its' warmed through. Reading on here, it seems all 4 can be disconnected to see if she runs well without. So, whilst its running, can I disconnect them ONE by ONE, to see which one could be causing the stumble ?
The left side one has silicone mastic on it, so probably repaired in the past.
Any comments welcome....
Regards all, Terry.

fogrider · Post by **fogrider** » Sat Feb 16, 2019 5:02 pm

Thanks both, I will re-try the code test. It's just odd that, once the engine's warmed up, it runs beautiful.
Will let you know what the codes say, hopefully soon...â€¦
Regards, Terry.

Busy Little Shop · Post by **Busy Little Shop** » Sun Feb 17, 2019 2:22 am

fogrider wrote:Thanks both, I will re-try the code test. It's just odd that, once the engine's warmed up, it runs beautiful.
Will let you know what the codes say, hopefully soon...â€¦
Regards, Terry.

You're welcome Terry... I don't think its odd because before the warm up the
ECU is reading the sensors... once its warmed up it determines if a sensor is
malfunctioning and decides to run in the fail safe mode so you can limp home...

fogrider · Post by **fogrider** » Sun Feb 17, 2019 4:49 pm

So maybe she's OK really ?
Here's the result: Ign on- red light for 2 seconds.
Bridge the connector and ign on again- red light stays on, no blinks.

Am I any wiser ! erâ€¦â€¦â€¦..no !

Its'no 4 that has been repaired in the past. I unplugged it and turned the ign on again while still bridged- same red light on, no blinks.

fogrider · Post by **fogrider** » Mon Feb 18, 2019 11:02 am

Thanks Larry, did I explain OK, when I'm out for a ride, the PGM light is not on.Just the occasional blink and stumble early on while warming through. OK when hot.
Anyway, just checked the battery voltage, 12.18, pretty crap ! and it was charged last month . My tests yesterday would be at that voltage so, the batteries on charge and then I will test it , maybe the batteries had it.....?
The yellow wires have already been sorted and I will check the charge output too.
I should have stuck to my old Brit bikes- all this electronic stuff !!

fogrider · Post by **fogrider** » Mon Feb 18, 2019 5:31 pm

Well, put some charge in the battery and fired her up with the voltmeter clipped on. 12.6 revved up and 13.2 idling !
Battery test says it's weak -
New battery ordered and will try again after it's fitted
Did notice the little red blink occurs each time it's revved up and is just dropping off the top of the revs, not sure if that means anything though !

Work in progress......

Busy Little Shop · Post by **Busy Little Shop** » Mon Feb 18, 2019 10:04 pm

fogrider wrote: I should have stuck to my old Brit bikes- all this electronic stuff !!

I understand Fog... old Brit bikes were in the analog age... now we are in the
digital age... everything is dependent on correct Battery voltage... under
volts and she stumbles and blinks the red light...

Your RC45 charging system test showed 12.6 revved up and 13.2 idling...
these values are under charging battery... you need to troubleshoot the
whole charging system until you see 14.0 to 14.8 at 5,000 rpm... ideally
14.0 to 14.8 at idle because below 5,000 rpm the bike consumes more from
the battery than the system can replenish... above 5,000 the system will
replenish the battery greater than the bike can consume it... 5,000 is the
threshold point between draining or gaining in regard to battery storage...

RC45 Charging System

My Rec/Reg quick disconnect was about to turn my RC45 into a crispy critter...

fogrider · Post by **fogrider** » Tue Feb 19, 2019 9:16 am

That's brilliant support Larry, will be checking it all out soon as I get the new battery
Many thanks,

fogrider · Post by **fogrider** » Sat Feb 23, 2019 4:41 pm

Well, fitted the new battery, started up and put her on fast idle for a while to warm up. Had left the seat unit off to check the charge rate, GOOD JOB TOO !, saw smoke coming off the three yellows. Switched off and disconnected the battery.

Looks like a reg/rec fault , any chance of P15-7 Larry ? I googled checking reg/recs but wasn't happy with what I found.

Will be ordering a new one from Rex's speed shop Monday anyway, but it would be good to be sure

Regards, Terry.

fogrider · Post by **fogrider** » Sun Feb 24, 2019 2:41 pm

Got the P15-7, really clear "how to do " page. The reg/rec came out as all open circuit.
The wiring loom came out as specified, so looks like reg/rec. Should have the new one by Wednesday so will , hopefully, be up and running again .
Many thanks Larry
Will report on results Thursday
Regards, Terry.

fogrider · Post by **fogrider** » Tue Feb 26, 2019 2:26 pm

Please refer to the new topic,' Reg/rec units,' I need one !

Force-V4