Towards the front right behind the flex pipe, it is the first exhaust component near the front when you look under the car. It looks like a small muffler.
Assuming you mean catalytic converter, yes
You probably have gotten an answer by now ,but no they do not '88 was the last you for that transmission after that the became computerized
under the coil
According to the Gates website , the 3.0 liter V6 in a 1987 Nissan Maxima : has a timing BELT , it's an interference engine , and change the belt at 60,000 miles
Where is the fuel injector located?
No, replace the converter with a new one. Anything else is illegal.
There is no way to fix a catalytic converter for a 1987 Mercury Cougar, since it is a sealed and unrepairable item. Once it goes bad, you must jack up the car, unbolt the old converter, then put a new one in its place and bolt it in.
Under the Right Front Passenger Seat
Passenger side door, with your key.
Have the catalytic converter checked, probably stopped up.
The firing order for 1987 Nissan Maxima 3.0L DOHC is 1-6-2-4-3-5. It is the same for several years surround the 1987 model and is in a counterclockwise direction.
Yes, it is illegal to remove the converter without replacing it with a new one.