The fuel tank capacity is 18 gallons
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
relay R1 is for the fuel pump on a 1999 Mercury Cougar
It should be 15.5 gallons
For a 1999 Mercury Cougar : In the Power Distribution Box ( which is " live " ) located in the engine compartment ( on the drivers side of the engine compartment ) ( relay R1 is the fuel pump relay )
According to my Chilton's Auto Repair Manual : A ( 1991 ) Mercury Cougar has a ( 19.0 US. gallon gas tank )
The fuel tank capacity should be 58.5 liters or 15.4 gallons
On a 1999 Mercury Cougar : The fuel pump shut off switch ( inertia switch ) is in the drivers footwell behind the kick panel ( there is an access hole )
Actually , it has fuel injection , so there is no carburetor
On a 1999 Mercury Cougar : The fuel pump relay is in the Power Distribution Box ( which is " live " ) located in the engine compartment ( it is relay R1 and is one of the black relays )
The fuel pump inertia switch is in the drivers footwell behind the kick panel ( there is an access hole ) in the 1999 Mercury Cougar
probably the fuel pump?