Hi, my 2000 S40 start to make noise in front at the front passenger side during first few secs when accelerating from stop (engine is cold). It will last for a few mins. The sound is like a loosing metal part viberating. It almost went away after car completely warmed up. When put the car in parking and step on gas, I could not hear anything unusal. I guess something related to suspension but have no idea what it could be. Appreciate any experiences or suggestions. BTW, car has around 45,000 miles.