I recently pulled my gear out to go racing again and have found that my Futaba radio causes the steering servo to move slightly when the throttle is pulled. I am using a Futaba 4PKSR radio and have tried two different receivers, 4 servos, two ESC's and two different batteries. Originally I thought this was a servo issue but I tried the same servo's, ESC, batteries with an old Spektrum radio and cheap Orange RC receiver and the servos work perfectly with no movement when the throttle is pulled.

I tried a different model on the radio with a complete setting reset and have tried re-binding the receiver. None of which have made any difference.

Is this a Radio or receiver issue? Is there anyway to rectify the situation without spending a lot of money as I now race rarely.

Any help appreciated.

Try changing the plugs on your servo & esc wires. If you have an extension wire change it.

Also double check that you don't have anything assigned in the p-mix settings on the transmitter, or any other mixing settings.

after extensive testing the fault was the radio. Not a setting but the actual radio. Remove the radio battery, disconnect, reconnect and power on and everything worked. For those out there experiencing weird things don't forgot to try the simple things