Sarcastic Greasy Toilet Paper
- Jun 5, 2017
- London UK
- 09 Rocket III (not the Touring or Classic)
OK guys especially @Claviger and @Penner this is what we did, bit unorthodox but it worked.
Couldn't spend too much time today on bike as I would be moving a bed in there soon and had weeds to pull in garden.
We connected Tune ECU started bike, I noticed the "throttle" voltage was 0.64, and it was doing its low idle as normal around 650rpm (set for 850rpm in ECU), we loosened TPS nut and forced the TPS around (this was difficult as it was jumping around a bit but effectively did it by shouting at each other while one person watched the screen when it got close we nipped it up was then set at 0.61V and the idle was at 850rpm or thereabouts.
Stopping and restarting the bike and it started like it should jumped into life instantly, then settled to set idle no issues. Did this a few times and it seemed good, the manifold pressures were also lower at around 620 now so it felt right, revved clean from this too and resettles nicely.
I then thought aha I'll do a TPS and ISM reset and what do you know? the TPS was 0.61V and the ISM was 0.73, without any adjustment.
Then the AT sensor started getting hot sitting in the garage so we packed it in and Paul went riding, I went back to my gardening chores. There was one bright side to the gardening chores though I found an old electric leaf blower in the shed and I'm going to relocate it to the garage to create airflow on the bikes when working as the AT sensor got close to 50C yesterday and that also messes things up when trying to tune.
Thanks again for everyone's input into this, thought I was losing the plot at one stage, I understand Tune ECU (mostly) and know how EFI works but nothing was playing the game.
Fair play to you for sorting the problem out. I'd say you guys were close to tearing your hair out!
At the risk of being cynical - is the problem really fixed, or just worked around (for now at least)?
My worry is, since you had the problem with the original throttle body assy inc TPS, and changed that assy out inc TPS, and the problem remained... that the issue is elsewhere?
Seems strange that not 1 but 2 TBs have the same issue when TPS & ISCV are set as per the manual.
When the engine is not running, what was the previous, and what is the current, primary TPS volts?