98 Buick Century Engine Dies While Driving

my car is dying when I turn left. It has died twice while I was driving down the highway. I am in need of a solution to this problem as this has become a dangerous situation. Please let me know if you know what this could be and how I can fix it. It seems to stop exactly when I turn the wheel back to the right. It also seems to not do it after I fill up the gas tank but that doesnt last long. Thank you for your time.