According to the 1997 Mercury Cougar Owner Guide : ( Motorcraft FG-881 fuel filter ) for the 4.6 litre V8 and the 3.8 litre V6
Fuel Filter under PASSENGER SIDE between front and rear wheel.
right frame rail near fuel tank.
The primary cause for jerking on a 99 Mercury Cougar is the engine not getting enough fuel. This can be a sign of a clogged fuel filter, bad fuel pump, or clogged fuel injectors.
The fuel filter on this car in under the passengers side of the car along the frame rail.
Trace the fuel lind from the tank to the engine and the filter can be changed with special tools from the parts store.
Fuel pressure regulator.
under the vehicle along the passenger side frame rail
Perhaps a clogged fuel filter. If a car stops running--or won't start or stay running--it's either a fuel or a spark problem.
what kind of tools do i need to change a fuel filter on a 2000 cougar
the fuel filter is under the backseat area under the car..... Crawl under passager door about a footand then look up and viola it sould be right abouve you a few tools will be used to remove it...ps fuel pump right by it
in the truck under the carpet you can see the fuel pump hose or line. if you were to follow that you might find if.