Was riding to work last Monday when out of the blue the Low fuel idiot lamp lit, about 10-15 seconds later the bike shutdown at idle. Re-started it and the same thing happened about 10-15 seconds later. None the less it was a long ride home, having to pull the clutch and restart the beast every so often. Seemed that as long as I applied throttle to it it would run a bit longer but not much (30 sec maybe)
Got her home, linked up my PC w/TuneECU, fault code was P0460, Fuel level sensor circuit. Tried to reset the fault but was unsuccessful, idiot lamp stayed on. Then performed all the continuity checks as the service manual calls for, everything looked fine. Ran the limited tests that TuneECU can perform,,,,, fuel pump passed w/o issue. Also checked the TPS, reading was within spec at .059V. At that point I pulled the tank off, then the sending/fuel pump unit out to check the float assembly. The float resistance read variable from end-to-end from 10 to approx. 100-150 ohms. Although functioning correctly as a rheostat, without analyzing the circuit it goes to or knowing what the values should be, hard to say whether good or bad. While the tank was off I went thru all the wiring connections on the bike, checking for wiring issues, cleaning and coating the connectors. Checked and cycled all the relays on the bench, pulled the ECU to do a quick visual on the interface connectors. I then cycled the fuel pump on the bench real quick while immersed in fuel, seemed fine. Everything checks out in stand-alone testing. The only thing in the tank that couldn’t be tested is the fuel pressure regulator.
I then reassembled & reinstalled the fuel tank. When the key is turned to on, you can hear the system going thru its power up self-tests but the low fuel idiot lamp is still lit as well as the P0460 fault is still present. Fired her up, she sounds fine but 10-15 sec later she just shuts down.
Just to step back about a week or 2, there were times while riding I did tend to get a faint fuel odor. Checked the beast out but found no fuel leaks and all the lines look fine, figured it may have come from the vent line.
A bit stumped at this point as I’ve found nothing electrically wrong, that I can tell, with her as of yet. One question is though, if the fuel regulator were to fail, can that in itself be a cause for this issue? Looking for opinions & any assistance is greatly appreciated.
Bringing her (trailering) to my dealer tomorrow as the triumph scantool is significantly more comprehensive in its insight into the system than TuneECU.
Got her home, linked up my PC w/TuneECU, fault code was P0460, Fuel level sensor circuit. Tried to reset the fault but was unsuccessful, idiot lamp stayed on. Then performed all the continuity checks as the service manual calls for, everything looked fine. Ran the limited tests that TuneECU can perform,,,,, fuel pump passed w/o issue. Also checked the TPS, reading was within spec at .059V. At that point I pulled the tank off, then the sending/fuel pump unit out to check the float assembly. The float resistance read variable from end-to-end from 10 to approx. 100-150 ohms. Although functioning correctly as a rheostat, without analyzing the circuit it goes to or knowing what the values should be, hard to say whether good or bad. While the tank was off I went thru all the wiring connections on the bike, checking for wiring issues, cleaning and coating the connectors. Checked and cycled all the relays on the bench, pulled the ECU to do a quick visual on the interface connectors. I then cycled the fuel pump on the bench real quick while immersed in fuel, seemed fine. Everything checks out in stand-alone testing. The only thing in the tank that couldn’t be tested is the fuel pressure regulator.
I then reassembled & reinstalled the fuel tank. When the key is turned to on, you can hear the system going thru its power up self-tests but the low fuel idiot lamp is still lit as well as the P0460 fault is still present. Fired her up, she sounds fine but 10-15 sec later she just shuts down.
Just to step back about a week or 2, there were times while riding I did tend to get a faint fuel odor. Checked the beast out but found no fuel leaks and all the lines look fine, figured it may have come from the vent line.
A bit stumped at this point as I’ve found nothing electrically wrong, that I can tell, with her as of yet. One question is though, if the fuel regulator were to fail, can that in itself be a cause for this issue? Looking for opinions & any assistance is greatly appreciated.
Bringing her (trailering) to my dealer tomorrow as the triumph scantool is significantly more comprehensive in its insight into the system than TuneECU.