Ok I was driving to a friends house last night, and when I reached a light, I noticed that my idel was dropping down to 300 and fluctuating. I drove on some more till I got my friends apt. complex, and when I tried to go slowly over the first speedbump, my car shut off. I turned it on and it shut off when I went over the next speed bump. Finally, I pulled into a space and the car shut off again. I was thinking one of my spark plug wires came loose. I opened my hood and pushed on all the plug wire connections, and they all felt tight. I turned my car back on and it started and idled fine. I drove to get some viet food which is pretty far away, and it drove fine. Anyone have any idea what it could have been? MAP sensor dirty? Plugs? Wires?