HELLO, i have a 2007 turbo and when i start it sometimes when its cold a weird sound like something is vibrating for 2 seconds and then its gone :S i am wondering what it is?

 

license plate frame perhaps?

 

noo the sounds come from the engine, normal cars engine makes a vroom sound when they start:P my car does the vroom sound plus a rattle sound rrrrrrrrr then it goes:S

 

loose heat shield perhaps.

 

If this is a VERY momentary rattle/mechanical noise, watch your oil-pressure guage at start-up next time...with 0-40 oil, I think you'll find the rattle connected to the very sligiht delay between start up and seeing oil pressure on the guage. Again, this is very momentary, but I've seen/heard it happen on my 08 Turbo if it sits for a week or so. The 'rattle' I hear leaves immediately when the pressure guage moves, and again, that is almost instant to the car starting, but enough of a delay to make this noise.

 

There are some small bolts under the rear bumper that hold the heat shield, these are can loosen and rattle.