So typical symptoms of a bad hall effect sensor would be runs when cold, dies when warm correct? i have been having issues with intermittent cutting out while riding when the bike was warming up but it would never cut out completely, it was more of a stutter. Now it starts and idols fine for about 5 minuets from cold, starts to idol a bit rough, then sputter for about 10 seconds and engine cuts out. pump is running for a few seconds after it dies. when i try to restart after it shuts down, it sputters and starts to fire up and then dies. i let it sit for 15 min and it fires right up. I replaced the fuel filter again yesterday, pressure regulator is new as of last year (fuel pressure confirmed when this was replaced), i hooked the pump up to a power source and drained the tank and it ran smooth the whole time, wiggled connector for pump while running with no issues. New RAM spark plug leads, new spark plugs, compression test was good and even across all three cylinders, throttle boddies synced. Coolant temp sensor values confirmed when cold, both pins were within 100 ohms of each other and of the correct value for the temperature. crank case breather is new, before i had issues with it dying after it warmed i had used some starting fluid to check all the seals around the throttle body and intake for leaks, nothing found. ignition key contacts cleaned and rebuilt, main ground on frame under tank cleaned and all new ring terminals put on grounds with a bit of contact grease. I purchased a used Hall Effect Sensor because it sounded like a typical HES failure. Im not sure if it was out of a running bike or not but i have the same issues with that one as a do with my original one. both have been tested with the LED test circuit, heated with a heat gun and tested again. both passed. So now im really stumped, as far as i know the coolant temp, inlet temp and the HES are the only temperature influenced things on the bike. At idol the inlet temp sensor should not be taken into account by the ECU as long as the bike is under 900RPM. I was hoping someone else has had something similar happen and could lend some input. Im pulling the tank off now to check the Ignition control unit, the Mass airflow unit and check the ECU conections to the sensors. Any input would be greatly appreciated oh and the bike is a 1986 K75[color=rgba(0, 0, 0, 0)]😊[/color]
