mamba max pro problem

ok heres the thing , i have noticed when using my mmp on a hightec 5955tg or 7955tg when you turn the wheel alot it will glitch and some times the motor will turn on and the servo just stops , ive tryed to run it on 5.5v-7.v and still the same thing , also had a guy runnin one here at the track also and it did the same thing , one more thing my fan allready stoped working i was runnin it on a 6.5 and noticed it seemed like some thing was wrong , i pulled it off the track and temped the ESC and it was at 210 never did get the fan to work , is it posable to send in just the fan ? thx joe