For vaccum leaks just check the pvc valve and any other hoses that are breathers or vaccums. You could somtimes hear air coming out. And with the throttle body you can take out the filter pipe and look inside to see if the throttle blade is closed. I sugguest taking it out and cleaning it with break cleaner inside that might help. But if you said that you changed the spark plug wires and it worked for a couple of day it might be a distrubitor problem. You can take out a spark plug wire while the car is running and check if there is electricity going thru (be very carefull you might get shock if your not).