Occasionally erratic idle, what can I adjust without TuneECU?

JLeather

.040 Over
Joined
Mar 6, 2021
Messages
55
Location
Ijamsville, MD USA
Ride
2007 R3 Classic
My '07 Classic has an occasionally erratic idle. At first start-up it hunts around for a while, which I always figured was normal while the engine was cold and transitioning from closed to open loop. That doesn't bother me, but it also hunts around a little when it's warmed up when you first come up to a stoplight. Idle starts low and a little rough, and after a couple seconds it comes up to ~900 and smooths out and all is well. Hasn't been an issue I've cared about until yesterday I blipped the throttle for a downshift from 3-2 after a good 45 minutes on the road (so definitely fully warmed up) and the bike stalled. I popped the clutch and fired it back up, but it was a little annoying. No CEL's (knock on wood). I cleaned the crank sensor recently so I don't think that's it. After some forum reading it sounds like a TPS adjustment and ICVS reset and possible a throttle synch are in order, but I don't have TuneECU or a good BT reader/cable. I have a cheapo OBD2 BT adapter that is not good enough to load tunes per the TuneECU website. What can I accomplish with the tools on-hand? Is it possible to get TuneECU to perform an ICVS reset through a cheapo adapter? Can I/should I adjust the TPS to .60v with a volt meter without TuneECU? Can I clean the idle stepper without affecting the adjustment?
 
U ask a lot of questions lol
U need the lonetec cable and an android computer.
It would b complcated to adjust tps w/o it
W/o the lonetech cable the things u can do are spray throttle linkages/springs with wd40 or better cleaner do wot then let the grip spring shut. U can also pull the rubber back on the stepper and spray in there turning the ign on and off a few times to work it.
I concider myself pretty good at this and it seems mine is doing almost the same as yours i have to barely open the throttle and then it will start and takes a little while to warm up a few times dies when 2nd shift.
I have been using seafoam in the gas and it has helped a little but is not cured. I have ane idea to make an experimental adjust but my shop is just to busy now and i am slow to get things done.
 
Yeah, the warm-up doesn't bother me that much. I have plenty of vintage bikes that are much more finicky when cold. It was the stall between a shift when fully warmed and running that caused me to be concerned. I may just have to suck it up and get a cable. Figured I'd try the cheap and easy stuff first. I'll clean the linkages and throw some seafoam in it. It might also be that the tune is a little off. The bike had a CAT/EVAP delete and pops like hell on decel but runs great otherwise. I don't know if anyone ever tuned it after the changes as that all predates my ownership. To date this is the first time it ever stalled after warm-up.

I've got a good carb/TB synch tool (Morgan Carbtune). Several of my other bikes require a yearly carb balance. I figure I'll take a shot at that also.
 
The only time mine acts up after warm up is when the throttles r sticking and then it will barely run or hang around 2000-2500 rpm. And with a full tank and setting in the sun.
 
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