Engine stalling

First thing I would try is change your fuel filters. Some more details like auto or manual trans, stock or aftermarket ignition can be helpful. Any recent changes under hood?

Funny how we fix one thing and another problem crops up. I would change fuel filter first. Cheap and easy and is a real easy to not do regularly. Ever buy a can of gas and look in the bottom and see all the garbage floating around? If your car isn't getting full voltage may be a problem. I would check the things that you just changed and make sure it got hooked right and tight. I often find the altenator and or the voltage regulator is what caused my battery to die or make me think the solenoid was bad. Pop in a new battery and seems all your problems solved, until the voltage starts dropping. IMHO I would start here before changing carb settings or doing any other stuff. I always look for the simple stuff first. Like vacuum leaks, loose crusty grounds, sticking chokes, etc.