Can't figure this out.

[Alex EX]

What can cause the car to jerk violently when its cold and then do it a little when the engine is warm? It has to be tied to the same problem, im guessing it's nothing mechanical like axles or motor mounts. What can it be? (I replaced spark plug wires, plugs, rotor, cap, cleaned injectors, reset ecu, cleaned IAC, EGR valve, nothing changed.)

[ceelooboob]

maybe pcv, cleanout throttle body and all that and i also hear alot egr ports cause problems