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regulates the fuel pressure.
where is the fuel pressure regulator on1991 lumina 3.1 /
look in your owner's manual
thank you
It is in the throttle body.
The Fuel Pressure Regulator is located on the fuel rail. The fuel rail located next to the engine valve cover. The fuel pressure regulator line needs to be de-pressurized prior to replacing the regulator. This may be accomplished by removing the fuse for the fuel pump while the engine is running. The engine will stop once fuel pressure is lowered.
Follow the rail line that runs to the injectors. You will find the pressure regulator.
The fuel pressure regulator has one bolt holding it in place.l
In the throttle body.
10mm socket and bullnose pliers, disconnect the battery first!
You need to hook a fuel pressure gauge to it and adjust the regulator so that you have 9 to 13 LBS, of fuel pressure. No lower are higher.
Try replaceing the filter or the fuel pressure regulator.