I purchased a 94 Nissan Sentra 3 1/2 years ago. When I slow down to stop and put the clutch in the car stalls. When ever , sometimes all the time or it goes for a while with out doing it. Now I am in the process of putting in my 4th alternator in the past year and a half. It has only been a month since the last one. No one seems to figure out whats wrong. Can't afford to buy a new car but this is not good! Any suggestions ?