My civic is an automatic and it has a manual choke. It turns over but it won't fire. Before it stopped starting it started stalling when I would come to a stop or slow down coming into downtown off the highway. It used to stall sometimes if I pushed to choke in too far when it wasn't warmed up enough but now it was doing it even when the engine was warm. I am hoping it's something simple that I can take care of myself. Thanks.

Test for spark, at each cylinder. If none, replace the Ignition Control Module and coil.