Engine misses and jerks around 1000-2000 rpms

[PeTr0]

Your problem is most likely the EGR then. It should not be spiting exaust gases into the mixture until the rpms climb and that could cause the engine to fall on its face. Unplug the vacuum line and the electrical connector and then drive around see if you still have the problem. The EGR valve is located on the spacer between the throttle body and your intake.