Is the fuel pressure regulator in the fuel pump

Hello, the fuel pressure regulator is integral to the fuel filter. The fuel filter is located under the vehicle at the frame floor on left ahead of the rear axle. I'm not sure this will fix anything though. Hands on testing with diagnostic equipment is needed to see what's going on. Use this link to find some shops near you that can help with your concern: www.repairpal.com/repair-shops