Weird problems

[Osiris19]

Recntly, been having a couple problems with my mustang. The servo I guess you'd called that turns the tie rod to turn the wheels is spassing out constantly without even touching the turn control. It's really jittery and my Renoir isn't precise anymore. Also, my motor or rear wheels make a lot more noise now. I don't know if my motor is messed up, but I've taken the rear apart many times and cleaned it out but it still does it.