I have the same problem as yours. Did you solve this problem? Did you have more than usual smoke coming out of tailpipe that smells stronger when this happened to your car? How did you fix your car? The mechanic cleaned the throttle body and checked the oil and he said its good. Was there a pump or component that's bad? I don't have any check engine light on. This happened after another mechanic changed the serpentine belt because its slipping.