I've had this car for about 2 weeks, a sandstorm2. I've only had a 5 minute run after it got back from a shop so they could clean the engine for me. But today I turned on my controller, switched the car on, keeping in note there all new battery's and it's like someone else has a controller for it, wheels shake and the throttle opens and closes, I changed battery pack, changed the receiver but same problem, even changed chips and controller still same thing 
Also does anyone know a good website what sells cheap receivers for my other rc? Thanks
Also does anyone know a good website what sells cheap receivers for my other rc? Thanks