[shashi27]

Have a 35 is with about 40k miles. Past couple of days felt mild stumbling at start up. Just to be sure it wasn't bad gas I filled it up. This morning it ran really rough. I always let the car warm up for 5 to 10 minutes as I get ready to leave the house in the morning. When I got into the car it felt like an old carb car where I had to give it gas to keep it from stalling. When I started to move I thought it would stall. It violently shuddered a few times as a i drove it and the check engine light came on. I thought my engine was going to grenade. I figured I would limp it to BMW. They couldn't take it in today but after 15 minutes of driving I had no issues. Drove it at lunch and way home with no issues or stumbling. BMW will take it in tomorrow night. HPFP or 02 sensor? Car is parked in driveway outside as I am working on suspension of another car. Thoughts.