I just put in a rebuilt engine with 110,000 miles on it and i put in a brand new radiator as well. my car is a 1994 chevy camaro v6 3.4. when i turn my key in the ignition my car starts up righrt away no problem. however when i drive and come to a stop sign or stoplight my car will shake a little and die on me. when i try to restart it it hesitates but will eventually start again. i find that if i wait a couple of minutes it will start right away. what all could be causing my car to die while idle?