My car has always been very dependable until two days ago. Now after the engine is warm it will not start and run. It will initially start, then run VERY rough and then die (within about ten seconds). If I get it some throttle it dies immediately. This problem occured suddenly, the car had no symptoms before this problem occured. I have checked if the mass air flow sensor is plugged in but have not checked the flap yet. I have checked the Bentley and it leading me to believe that I have a vaccum leak or that my mass airflow meter is malfunctioning. Has anybody had this problem and can you give me any suggestions before I tear apart my whole ignition system?!