04-06-2018, 12:32 PM
(04-06-2018, 11:01 AM)The ferret_imp Wrote:(03-12-2018, 08:32 AM)The ferret_imp Wrote: Ok I went out and tested my 2014 DLX. Fired it up and it went to 1400 ish rpms normal cold idle. Dropped it into first and without touching the throttle let out clutch to just before engagement point and the idle went up to maybe 1700 rpms. Did this several times to verify. Let the clutch out any further and it starts pulling forward. Very Interesting.
Then I put it back in neutral and let it continue warming up until it got down to the 1050 ish rpms normal warm idle. Dropped it into first and without touching the throttle, let out the clutch to just before engagement and the rpms DROP to near 800 rpms. That's as low as I could get it to go before engagement started and bike started pulling forward.
So on cold idle a rise of near 300 rpms and on warm idle a drop of near 300 rpms by putting in gear and letting clutch handle out to near engagement point.
Interesting, today I tried repeating this. I pulled it out of the garage, fired it up, it immediately went to normal cold idle, about 1400 rpms. I dropped it into first, and without my hand on the throttle let out the clutch until it started to engage. Today the idle went DOWN as usual, not up like before. I did it 3 or 4 times. Each time the idle dropped as I got near engagement.
The only difference I can think of, is last time it was probably near 32 degrees, when I tried it, and today it was about 50 degrees. Can't explain it.
Only a guess: Based on IAT and/or EOT input(s), the ECM affects operation of the IACV. Be interesting to see ECM program code.