Ive recently gotten my oil consumption problem fixed by my dealership last week. Noticed the first day having the car back there was a bit of engin shake and power loss when the ac turned on. Naturally what I did was turn the ac off and on again.worked fine.

after this it was ok for what seemed like the rest of the week when today on my way to work I had realized that the car was stuttering and the check engine light was flashing but not staying on. I have the dealership checking it tomorrow but I’d like to hear your opinions so I can get an understanding of what is happening.