Why does my Volvo s60 cut off when it is cold?

 

2007s40 - if you are turning the key to the start position (ie position3) and you can see the belts moving, the starter is engaging the fly wheel. With that I am having a hard time following your observations. If you turn the key to position 2 - the dashlights should come on but the engine should be still. turn to position 3, the engine should crank (ie belts move). if you release the key back to 2, the engine should stop rotating if its not running... Now if your concern is the engine is cranking and sounds odd like its spinning freely - that could be a few things including a broken timing belt or perhaps "lawn mower syndrome" where the engine has no compression due to a lack of oil on the rings. Have you pulled off the timing belt cover to see if all looks normal?

m01017612 - try creating your own post for your question.