Just bought a 2012 Volvo XC 90. Sometimes when I start the car it is "rough" like it is missing. I can drive a little bit but very sluggish. If I turn the car off and recrank it everything is fine. Also sometimes when I crank it no problems. But then the next time I crank it again will feel like it is missing or chugging. Any advice for this non car person? Many thanks.