08-14-2017, 10:46 AM
I've posted multiple times to this thread, so I won't go back over any history. I last reported my high idle returned when riding stop & go (mostly stop) in town, and the engine got hot. As has happened several times, the idle returned to normal (1,050 RPM) after the bike sat for roughly 45 minutes. I dumped a can of fuel injection cleaner in the tank (probably 3X the recommended amount) and my mileage went up from the low 40's to the mid/upper 40's. Coincidence? I don't know, but I calculate my fuel mileage the old fashion way, with a calculator. Rode the bike to Palm Desert yesterday - 60 miles of 70 - 80 mph freeway, followed by 60 miles of 50 - 60 mph two-lane (each way). Temperature was 110 degrees F in Palm desert. Stopped at four stoplights in town and each time the bike idled perfectly. Stopped for lunch, and restarted the bike about 40 minutes later - perfect idle. The wife didn't like the heat, so we headed home. The bike is still running perfect. So my point is, the high-temperate, slow speed riding (admittedly it was only 4 stop lights) didn't cause the high idle again. Maybe I was just lucky. Maybe the fuel injection cleaner did something? Maybe the IACV is sticking, and over time it is freeing itself up? I still believe the high idle is somehow linked to the IACV, whether it is the valve itself, of the signal it receives from the ECU. To be continued.