The car is 2009 city automatic, we just changed battery a month ago, thats when the problem started. The engine would just die, coming from a neutral or a full stop, or a slow down. I just haveto turn the ignition to off then start again, and the engine would start, just one click so i guess the problem is not in the battery itself. Maybe on a connection? Alternator?

I also tried it with AC off and radio off, still the engine stops coming from a full stop or a slow down.

Can anybody help?