2006 M3 stalls after starting
Bought a certified used 2006 M3 manual with 24k miles on 10/29/09. Drove it home and turned it off. When I tried starting it again, it would turn over but then immediatly stall. This happend a few times over the next 3 or 4 days. I brought it into my local bmw service center and they replaced the ECM which is what the car usesd to talk to the key. I picked it up after 3 or 4 days and the car ran perfect for about 4 days and the same probelm occured again. This time, it would not start at all and I had to be towed back to the dealer. They had the car for 2 weeks and replaced the computer. I picked up the car again and it drove fine for about 4 days untill bam, the same problem occured yet again. This time it was in my drive-way on a Saturday night, I tried for 2 days to start it but ended up having it towed back to the dealer again. The car is still at the dealer after a week and they tell me that they have not been able to re-create the probelm as the car has been starting.
When the car runs, it runs fine, no indication of any problems like rough idle or loss pick-up etc. I find it curious that the car seems to have no problems for about 4 days and then seemingly starts the cycle over again. However, this does not explain why in the begining it would start after a few tries.
I bought the car in Miami from a lease return and find it hard to believe that this consistent stalling issue only started after I drove it home. What makes this even more frustrating is that the car is a replacement for a 2002 540i that was totaled on 9/29/09 when a lady ran a stop sign at about 50mph and hit me on passenger side.
I have looked online but have not come across reports with the same symptons, any info would be greatly appreciated.