Debris in tank
We have a problem on our TL150 every so often and usually have to blow back the fuel line from the electric pump on the door back to the tank. My operator recently pulled out a small piece of rubber foam out of that line. Sounds like there may be some type of gasket that they use that is breaking free in the tank and getting sucked up in the fuel lines.
However, our problem seems to be different than the one this post is about. We have had issues with sensors in the past and have run the machine with the sensors disconnected. There is a service "plug" or "switch" or something like that, which I can't rememember exactly at this time back above the battery on the wiring harness. I think you have to remove some tape to get to it. Once you switch the machine to this mode though, then the machine will run and operate without the lap bar down which can be very dangerous, so be careful if you try this mode. My suggestion would be to try the mode for a day and see if the machines still cuts out. If it runs fine, then you know it's not a plugged fuel line and most likely an electrical sensor isssue.
Just my 2 cents....