My L3901 HST has started dying suddenly on me. Occasionally I get the engine rpms surging, but most of the time it is like I turned it off with the key. When this happens, I hear no clicking from the fuel pump.
When it is running properly, and I shut it off via the key, I hear the fuel pump clicking for 10-15 seconds, and then it stops.
I have emptied the fuel/water separator, replaced its screen and o-ring, and replaced the fuel filter.
I'm thinking the next step it to have the dealer look at it, unless there is something else I should try first.
Another note that may assist with the troubleshooting - this does not usually happen until the tractor has run continuously for an hour or more. I have been moving a lot of dirt via the loader, so the engine is up around 2200 rpm. Don't remember the last time the tractor went through a regen cycle.
The tractor has 150 hours on it. Oil and all filters were changed at 50 hours. The fuel filter was changed again (as mentioned above) in the last 5 hours.
I live in SE Georgia, so the weather is very temperate - have been using the tractor in 50-70F when this has been happening.
