For a 1988 Mercury Cougar :
According to my Chilton's Auto Repair Manual :
For the 2.3 litre turbo ( 18 U.S. gallons )
For the 3.8 litre V6 ( 21 U.S. gallons )
For the 5.0 litre V8 ( 20.7 U.S. gallons )
inside of the tank
On a 1999 Mercury Cougar : The ELECTRIC fuel pump is INSIDE the fuel tank It is installed through an access hole in the top of the fuel tank
In the fuel tank
Yes
its in the fuel tank repair about 700.00
Inside the fuel tank
Try looking on the drivers side in the trunk under the mat/carpet along the side.
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 pump on a mercury cougar is in the fuel tank. You are going to have to remove the fuel tank, take the lock ring off of the tank, and then pull the pump assembly out.
relay R1 is for the fuel pump on a 1999 Mercury Cougar
According to the 1999 Mercury Cougar Owner Guide : ( 58.5 litres / 15.4 U.S. gallons )
it in your gas tank if its fuel injected