Turn on and then turn off

[DKsemi]

Hello there,

I am new to this electric RC.

I ordered me a 1-14 Knight Hauler and thought it would keep me busy for a couple of weeks but after one week it was on the ground driving, fun fun

Then the shift servo went bad, I got a new one and put it on. Now I can get it to start up and idling for two select. then it turns off again.

Any one that have a idea to what the problem is ?

Thanks in advance