mamba help.. (not working)

[phildogg]

ok got in a new MM esc put it in the truck,programmed it all fine. all worked great.. (running 2 titans in a E-maxx)running 4s lipo charged and ready,using a receiver batt. ...red wire to receiver is pulled already,stays on yellow till hit the throttle then goes green and yellow .. motors run slowly .. reverse same thing... .. Its in brushed mode not high power brushed. have tried reprograming the radio to it and nothing.
phil