Car stalls while idling on 2002 Volvo S40

Within the last 3 weeks, my car will stall as I am sitting at red lights or just idling. It happened once a week for the first 2 weeks now about 4 times in the last week, so more frequent now. What can cause this? I just spent about $2200 in Dec and another $500 in March fixing "known repairs necessary at about the 60K mile mark in Volvos.

Asked by for the 2002 Volvo S40
We would love to help, but need some additional information to accurately diagnosis you problem. Why don't you give us a call at (818) 718-6138 and we can discuss this over the phone
Mark's Independent Volvo Service
1 more answer
i'm a expert volvo tech, you could possible have a vacuum leak or a bad idle control valve
you can call if you have farther question (626)343-9860