A while ago I noticed that when I move a metal object around inside the head of my truck the throttle servo twitches. Since then I have replaced the engine, that servo and redone my electronics system for different reasons. Still I am having the same problem. Its on a lst, does anyone know what is going on?
Thanks!

It might be your radio. How often do you put a metal object inside you truck? If not, It's nothing to worry about. When I put another radio next to mine, mine twitches. I can't explain why, It just does.

Otherwise do you have another reciever to test it with? Also can you adjust the trims for the throttle on your radio? Sometimes adjusting the trims just a hair will make a twitching stop.

my muggy used to do that but with my steering. turn out to be the servo wire was pinched in between the servo tray and the chassis. take your servo out check the wires for any splits where it can contact the chassis. it will ground itself out. hope this helps