le code on lg?

I get the LE code in my LG front load washer. The spin cycle sounds like a jet engine if it gets that far in the cycle. I can prevent the LE code error if I stand right there and turn the motor in the back when the motor stalls and buzzes. I have to turn it a little to get the motor to turn and stop buzzing. I replaced the bearings and seal in the drum. That didn't repair it. Next, I replaced the sensor on the motor. That didn't work either. So, I don't know what to do next?