There isn't anyone dinking around in the pits, or worse yet, out around the corner where you don't see them, that might be on your freq? I had that happen. Someone was tuning in the front parking lot and it caused my car to fly off the track and hit the pit shack full bore...
Also, make sure that the receiver and antenae wire are not touching the chassis directly. Two sided tape in between is fine... But, if you have the receiver, or the esc mounted tight up against the side battery rail or some other chassis component - especially with graphite, it might cause a glitching. I learned the hard way... Just replace or change one thing at a time.
Change crystals? Done We're sure they are the correct crystals for your radio system? Some jsut don't seem to work with other brands...
Receiver? RPL or move. Wires aren't bare and touching somewhere??? Run the wire outside the antenae pole and not through the chassis mount ensuring that it does not contact the chassis. Spiral the wire around and secure with electrical tape.
Charge or RPL radio batteries even if they show good - you never know...
Black tape the bottom and sides of the battery tray so the battery posts to not contact the chssis and carry the current.
Black tape the outside of the battery try where your rx and esc are close to the rail when installed.
Servo? Free range of motion? Wires aren't exposed and touching somewhere?
Try a different ESC. Something will fix your issue, and you may never know exactly what you did to fix it... Are you racing inside offroad or carpet?
Jeremy Kasten - Cole's Pitman! (Dad); Kasten Racing: www.facebook.com/kastenracing
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