possible interference?.

[golfito]

possible interference?.
Wonder if any of you I pass something like:
Restarts repeatedly the values shown by the telemetry.
The speed signal returns to zero again and again especially when operating the steering servo.
And also at random to be stopped the car and drive the servo direction occurs as interference and moves for a moment the car backwards.
The receiver voltage values appear normal.
Try a 2200 micro Farad capacitor and 16 v and a ferrite ring and did not fix the problem.
I have installed:
mmm combo kv 2200
Spektrum Telemetry Receiver
cc fan
5 s batteries 5000 ma and 30c (blue lipos)
htx bullets 4mm connectors
servo direction SAVOX 20 kg
temperature sensor used in the motor nitro
rpm sensor
Any help.
Best Regards.