Issues setting up 2nd car (tx/rx or esc issue)

[Squidzilla]

Im new to all this and working on my first kit car (dex410v4) I have finally finished it and got everything in, and just trying to set her up.

ESC - Hobbyking X-Car 120A Brushless Car ESC
SERVO - SAVOX SC1258
RX - CR154 - Core RC Code 2.4G FHSS Sport Receiver
TX - CR151 - CODE 2.4G FHSS LCD 2 Stick Tx + RX

I turn the esc switch on, and the servo and esc start intermittently juddering around. I try to key in the receiver to the radio and I'm not sure if it is accepting it.

I already have the TX set up with a car1 and that is fine, this is set on the TX as car2

Where do I start fella's? all your help comments and criticism's are welcome