My car randomly turns off when reducing speed. It caused an accident a few days ago. I have had multiple mechanics try to figure out the problem but the only thing that comes up on the diagnostic tool is it needed 1 coil replaced. They have all been replaced and still won't go away. The Che k engine light is on. And the car uses about a quart or more of oil everytime I fill up but has no leaks. When I reduce speed the car in traffic, around corners or to stop it constantly turns itself off. Starting it it sometimes turns itself off if I don't give it some gas at the same time. It smells like burning oil constantly.