Every morning no matter what the temp is, after I start my 2006 X3 after about 30 seconds it quits. Everything inside stays on. I can restart it immediately. Then if it is warm out it will keep running. If it is below around 60 degrees the engine try to die, I can see the battery and check engine lights flash but it immediately catches and stays running. It will cycle through this at 30 second intervals for quite a while. If I am sitting at a traffic light or still it will die. It does this until the engine is warm but occasionally it will try and die again later on. I have replaced the Idle Control Valve and Crankcase Vent Valve and all related hoses but it still dies. Any suggestions? Help Please! :(