Why does my Ford S-Max's engine keep stalling?

I recently bought a used Ford S-Max and I noticed that the engine keeps stalling when I come to a stop. I've tried changing the spark plugs and fuel filter, but it hasn't helped. What could be causing this issue?

Based on my experience with Ford cars, this could be a sign that the idle control valve needs to be replaced. I would recommend taking your car to a mechanic for a diagnostic test and proper repair.

I had a similar issue with my Ford S-Max and it turned out to be a faulty oxygen sensor. I would suggest getting that checked as well.

Make sure to also check the air intake system for any clogs or obstructions. A dirty air filter could also cause stalling.