I have a caldera 10e that is about 8 months old and it just started doing the same thing. I spoke with James @ redcatracing and he had suggested resetting the esc and changing the low voltage cutoff. Unfortunately neither worked for me. I run my truck pretty hard but always try my best to clean and take care of it. The last suggestion I got from James @ redcatracing is that the magnets in the motor are getting weak, which could mean, it's time for a new motor. If you guys haven't tried restating the esc it worth shot.