Couple of issues wih my Mamba Max

[BrianG]

Well, if your BEC is cutting out for whatever reason, it will affect steering and throttle. The ESC gets the throttle signal from the receiver and if the receiver loses power, then there goes the signal. Who knows, the BEC could have a bad solder joint, not rated for the current the servo and fan needs, etc. You can always try a receiver pack to verify that it's the BEC.