I got the second of two FI codes today when I went to fire it up to leave work. Almost exactly two weeks ago it did the same thing. I'm glad it did it back then so I know I can rule out the new TPS which I have installed in the meantime.
I fear I may have to have the injectors cleaned or replaced. Or maybe the ECU or an oxygen sensor, or possibly the fuel pump (though I doubt that because it red-lines just fine). I guess I have to get a code reader on it or catch it in dealer mode when it happens.
Here's what happens:
Both times, hot afternoons after the bike had been sitting in the sun after being ridden in the morning. Turn on the key, red light on dash and FI on the dash. Fuel pump does not cycle. Nothing else strange. Not sure if the gauges swept or not. Have to watch for that next time.
Turn off the key, turn back on, all is well. For now, at least. No FI code, pump primes normally.
I'm pretty sure this must be related to the surging issue which has definitely not gone away. In fact, I'm thinking it may be worsening. This could be related to increased temperatures. Both times were on the hottest days of the year so far, and the surging seems worse when hot. The only other thing I can think of is a plugged fuel vent. Sometimes on a hot day I think I catch a whiff of gasoline but that could just be from the old hardened cap seal which would mean it's not a vent issue anyhow.
Anyway, tomorrow is supposed to be stinking hot, so I'll put it in dealer mode for tomorrow's commute and see what I see. Already dumped in new fuel and injector cleaner.
Anyone have any other ideas?
...Further investigation reveals the following thread which suggests an electrical connection problem (a bit of vintage Greywolf): https://www.stromtrooper.com/dl1000-...t-start-4.html