Why does my Ford Galaxy keep stalling while idling?

I've been noticing that my Ford Galaxy has been stalling while idling at stop lights and in heavy traffic. I've had it serviced but the problem still persists. What could be causing this issue?

This could be caused by a dirty air filter. Make sure to regularly clean or replace your air filter to prevent this issue.

I had a similar issue with my Ford Galaxy and it turned out to be a faulty fuel pump. Have your mechanic check it out.

It could also be an issue with the spark plugs. Make sure they are clean and functioning properly.