motor information

What is your question?

per previous question...so we got the car going and it drove fine at first but it has some problems...the motor jerks alot and when it is in neutral and idling motor jerks and almost feels like its missing on something..like the timing or i dont know that is just was someone said. also, my starter solenoid is gone and the other day i turned on my a/c when the car was running and it died right away...any thoughts????