I have a 2005 MCS. I have been haveing a few problems that i cant seem to figure out. One is the "trifecta of lights" i am currently awaiting my new ABS speed sensor for this problem. My other problem is that after the car is warmed up the service engine soon light will come on and blink a few times and then the car start sputtering like it isnt firing on all cylinders. it will do this for about 15 mins then it will run fine again. this has been happening on and off for about two weeks now. I am thinking that it may be a bad batch of gas but im not sure. any help would be greatly appreciated.