Yokomo ESC Question

[catcando6]

Hey guys,

Long time lurker and reader, first time poster ...

I picked up a new Yokomo BL Pro esc for, what I thought, was a screaming deal. Everything was hooked up and ready to turn so hot laps. It kinda works ... some times it has trouble getting started, like it's bound up. Give the car a little push and it'll go for a little then dies (like the power was turned off.). Sometimes it works OK and you can modulate the throttle from real low to full and then stops. Sometimes it "cogs" to a stop. I did a bunch of part and car swapping and the esc is definitely the culprit. I swapped batteries, cars, motors, sensor cable, ran just the motor with no spur gear and the issue followed the esc. Very reproducible. Is this a problem with the esc software version?

Thanks!
Brian