Yes I have a rampage mt pro. while not running you can turn on truck and remote and steer and throttle all day. Soon as it's running it doesn't respond. only ever now and then. New steering servos older battery on truck. New batteries in remote ??
I had this problem, on my truck it was actually the receiver battery connection had backed out of the receiver just a little bit. When the engine wasn't running/vibrating there was enough contact for the servos to work but as soon as I started it the connection would become broken.
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