Change the fuel filter before you go any further.
O2 sensor/leaky injecters/fuel pressure regulator.
check fuel pressure regulator
there is no fuel pressure regulator " sensor ", there is a fuel pressure regulator controled by vacuum located at the front end of the fuel rail.
The fuel tank pressure sensor is actually the fuel pressure regulator. There is a sensing unit within the regulator.
Assuming you mean "fuel pressure regulator", year and engine size info we need to know, it matters.
left hand side rear of engine bay on the bell housing by the fuel pressure regulator valve
there is none.there is a pressure regulator however.and there is a tank sensor sometimes that measures pressure in the tank. but not on all vehicles.
The fuel pressure sensor is located on the fuel rail attached to the fuel pressure regulator.
Are you referring to the (oil pressure sensor) or the (oil pressure regulator)?
The fuel pressure regulator is underneath the fuel filter bowl on the righthand side of the motor. It has a two wire connector plug that goes into it. Also it is underneath the oil pressure sensor switch.
It has a 2.2L and i have replaced fuel pressure regulator plugs map sensor and to other sensors on the throttle body. Driving habits may be an issue.
I presume you mean the regulator, since there is no sensor for the fuel system on the pre-engine side. If so, it is attached to the fuel pump inside of the gas tank.