Car starts, runs rough then dies after about 30 seconds Options

[RavenAegis45]

So when i start my car it idles very rough and even if you pick up the rpms to 2000 or 3000 you can still feel its running noticeably rough it'll last if you keep the rpms above 1500 but when it goes to idle it'll die in a few moments and then it wont start for a while.could this be the alternator going bad? I've checked all fuses and they seem fine, and also the check engine light came on so any ideas on whats wrong with it?

[Bitter]

check the IAC (may need to clean it) and check that the vac line to the MAP sensor is connected. any mods or recent changes to the car?

if you keep the idle speed up manually (foot on pedal) will it run ok after about a minute?

[RavenAegis45]

check the IAC (may need to clean it) and check that the vac line to the MAP sensor is connected. any mods or recent changes to the car?

if you keep the idle speed up manually (foot on pedal) will it run ok after about a minute?

Well I changed the oil this morning but it ran fine after i changed it, well my i took the car around the block keeping the rpms a little high and it ran terrible, it felt like i had no power. but after i got home i popped the hood and noticed smoke coming from the distributor area and not long after that it seemed to idle fine so i left it on for a few minutes and took it around the block and it seems completely fine now except the check engine lights on still. But on another note when I checked the Oil the Holder for the Dip Stick came out and its still noticeably loose and the dip stick doesnt seem to pick up any oil either?