fordaholic

Hey, guys I was wondering if any of you can help me for I am new to the whole mustang thing. I was on my way to work this morning and when I came to the stop sign it shut off but started rite back up. On my way home it would absolutely not idle but when moving down the road ran fine. I come to a stop light holding rpm at 1500/2000 so it would run I could smell unburned exhaust fumes pretty bad. When I pulled out it all most stalled then started jerking bad so I floored it and it finally took off. Again running fine wile moving. When I got home it shut off and would not start. It would try to start then shut off like it wasn't getting fuel but there was black smoke coming out of the exhaust and again smelled like unburned fuel. After letting it cool down for an hour I tried again, and when it tried to start I floored it and it started and idled fine, so I let it run for a little bit. Then I shut it off and it wouldn't start again. So I quit any ideas?