I had the breather box replaced today when I received it back it seems as if there is water some where.It jurk and the power if bad at some stages it run smooth then it jurk and it is if there is no power.Then the Light on the left side stay on that indicated that there is a Fault in cars emissions system. How do we fix it.

Cars & Trucks - Volvo - V50 - 2005 Volvo V50 T5