guys my engine vibrates and it make the car lucks enough power when driving, i took it to a mechanic and he put a computer on it saying random cylinder misfire had the ignition coil and the module changes yet the engine still vibrates and computer says the same.
Could it be a problem related to the bcm or any other thing ?pls am open to suggestions thanx

 

What is the coolant temperature? If the temperature gets above 240 F, the "Limp" mode starts, in which the cylinders misfire randomly in an effort to cool it down.

Reasons for overheating can be thermostat, water pump, blown head gasket, lack of coolant among other things.