I own a Nissan Sentra GXE 2001 1.8 with almost 95,000 miles. I bought it in Feb 2001 new. For about the past 9 months the car will stall in slow moving traffic or if I slow down on a turn. My mechanic has run a diagnostic several times with no answer. There was a recall for some type of sensor which was repaired. The car had a tune up last summer. Do you have any ideas?