The Fuel Supply Module, FSM, is responsible to deliver fuel to engine in all application range in correct system pressure. It is usually installed inside the fuel tank.The pressure regulator is a component used in vehicles to regulate the engine fuel line pressure. This component is usually placed inside the tank, in the FSM. In some cases it is assembled at the fuel supply module flange due to layout restrictions.One application was released for 380kPa, without any problems. Once the system pressure was increased to 420kPa, it was observed noise problems in vehicle at high temperatures. It was investigated the root cause for the abnormal noise and observed the pressure regulator natural frequency matching with the flange housing natural frequency at specific conditions.The objective of this paper is to describe a methodology to identify and solve a noise problem using the design elements influence based on its behavior.