I guessing its a 3.8 nonsupercharged engine. it's under the engine cover on the driver's side. follow the fuel rail where the fuel injectors are mounted. it's round with a vaccum hose connected to it.
the fuel pressure regulator should be right on the fuel injector rail
where is the thermostat located on 95 buick regal
Where is the knock sensor located on a 1992 buick regal
How do you replace the fuel filter on a 2003 Buick Regal?
Complete instructions with photos:
On a 1993 buick regal it is on the side of the radiator.
On the dashboard
Its located in the air intake
It's an internal regulator inside the alternator. So if you want to change it, you'll need a new alternator.
2000 buick regal wiper pulse board /timing wipers
The 1994 Buick Regal horn fuse is located in the fuse box. The horn fuse will be in the second column, fourth from the top.
The Oilpressure switch is located near the oil filter, just upper side with the electric wires plug in