I have a 2010 lancer! I will be driving 60-70 on the freeway and the car will start to shut down. The dash will light up..then it will go back to normal. When i stop, it will die. 2dealerships & ind mech said its like the care is not talking to the engine

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They cannot get an error code. They said it could be something in the wiring but would hv to take apart my dash at 120$ an hr and that still might not be it. At an idle it shutters and in neutral it does not. Had to have it towed home because no one can help! And started when it got home! Too scared to drive it cause i cant get stuck somewhere! ! Any help is soooooo appreciated! ! Oh...and they said canbus B is not communicating...