Hello. My car (1991 9000 CD turbo automatic) has started to misfire (I think) when giving the car a lot of gas. The boost will rise up to the 2/3rds mark and then wont respond to throttle, if you keep pushing it, it completely loses power and starts shaking around a lot. It has started the same time as a few other problems. The car has a sticking idle when its at a stop (sits at 1200 and very slowly drifts down to 850-900), and it seems to be more sluggish at low rpms. Thanks in advance.