I have a VX Commodore 2000. A few times over the last few days it started to shudder as I reversed into a park and was about to conk out as I switched it off, then later as I drove home it started to shudder as I was driving, then losing power as I pressed on accelerator, and felt engine seemed to miss. Now I do know the engine mounts have gone in this car; could it be the steering rack? I have never driven a car with these issues before. Too scared to drive it and don't have a man to look at it or advise me on it.