Car shuts off by itself after rough idle problem

[Jacques79]

http://www.youtube.com/watch?v=w-mHYcJsgvo

I have a 2000 Boxster S with 50 000 miles

CPO warranty until November 2009


Well I got stuck in the snow around 6pm tonight and had to a lot of reving in 1st gear followed by reving in reverse for like 30 mins straight...

I finally managed to get my car to move with the help of about 5 guys and then drove my car back to my garage and parked her safely with no fuss.

Now about 30 mins ago I wanted to start it up to make sure it's ok, and this happens:


Note: *On friday March 7th I took my car to the dealership and they replaced the Mass Airflow Sensor under my extended CPO warranty. Dealer said my car was perfect aside from the mass airflow sensor: no leaks no nothing*

The car idles at 500RPMs and then goes to 1000RPMs and then back to 500RPMs and then back to 1000RPMs. It does this for a good 20 seconds along with a very sorry-weak engine noise and all of a sudden the engine kind of shuts down calmly by itself.

All of this is happening without me doing anything: I'm not touching any pedals.

I started the car again and tried to get it moving a bit but it just died.

It's not a battery problem because my radio and lights work fine.

My car never did this before.

Please help, I know a lot of you are stuck at home because of the weather so chime in!