First off I got the car back with the new Differential last friday afternoon. Was out of town all weekend, just got back in town, cleaned the ride up nicely, took it around town. Weird thing, Im makin a right turn notice my flashing blinker, then the check engine light was on. It was really sunny so I tried shading it with my hands just to make sure the light wasnt catching it at the wrong angle. I make the turn, pound on it... everything feels normal. Light turns off. Sitting at the next stop light, Check Engine light again. So I make a U turn, hammer it on everythings fine,the light turns back off so I turn left back into my subdivision cruise home, no light. I'll take it out later and see if it acts up again, the car is running fine, the gas cap was closed, the only thing I can think of is a Faulty 02 Sensor. But im not familiar with them throwing the check light on and off like mine was today. Any experience?