1991 Acura Integra Idle

Hi, My name is Edgar and I have a 1991 Acura Integra and when I turn on my car, and after it warms up, my Idles up and sometimes down once its warmed up, my engine runs really well. Its just that everytime im driving and I make a complete stop, it idles really low like it might turn off on me and sometimes it idles good. I just want to know what it might possibly be wrong with the Idle.

Thanks