Your 1991 Cougar might be running rough because it needs to be serviced. Try changing the spark plugs, spark plug wires, and checking for water in the fuel tank. You might also have an issue with fuel injectors that are clogged.
around 200, if it's running good,
The gestation period of a cougar is approximately 91 days.
leopards are faster running, if that's what you mean.
Need a little more information. there are a number of reasons why your cougar would run rough. Anywhere from the mass oxygen sensor to the idle control sensor, oxygen sensors and on and on.
300zx twin turbo lots of black smoke and running rough
According to my Chilton's Auto Repair Manual : For a 1991 Mercury Cougar : ( 19.0 U.S. gallons )
no try running a thicker oil so that it doesnt loose viscosity so quick. 1991's are motor driven oil puimps so if the oil is to think to pump it will run rough
They are 5"x7" front ant rear, http://www.modifiedlife.com/1991-mercury-cougar-car-audio-wiring-schematic/
Trail shoes are shoes for running in rough terrain. They are bulky and heavy I do not recommend running with them in places were there is not rough terrain.
the check engine light is blinking and my 03 Nissan exterra is running rough
sounds like coolant temp sensor is bad but also sounds like cat might be pluged
Not running but complete in rough shape, $2000. Very rough shape, $1000.