I have a Nissan pickup that will run good for a while (no specific time it differs) then it will loose power and I can only go thirty mph but it idles fine and if I stop and turn the truck off it will run fine until the problem occur again, which is anywhere from 5 minutes to an hour. Codes point to the coolant temp sensor and in replaced them both yet the problem still exist codes still the same even after reset.

SOURCE: 91 nissan Sentra losses power at highway speeds

remove the front 02sensor and drive the car like that, remove means complety take it apart from exaust, if problem goes away or gets so much better then your catalitic converter at the exaust is restricted and need a new one

SOURCE: 2002 Nissan Sentra Loses Power

SERVICE IT .....OIL PLUGS, AIR ,FUEL AND OIL FILTERS GET TROTTLE SENCOR AND THE MASS AIR FLOW SENCOR CHECKED

SOURCE: Black smoke from exhaust,no idle in warm temps-97 Nissan 2WD 2.4L

I had a 1995 nissan pick up with a similar problem, may want to try cleaning out or replacing the EGR valve.

SOURCE: 2001 nissan sentra xe p1320, p1140 codes car

Distributer Signal Output is code p1320........Intake Valve Timing Control Position Sensor Bank1 is code p1140...

SOURCE: 1997 Nissan hard body pick-up 2.4 won't idle and blows black smok

if its not the mass air flow sensor then you also have to check the timing belt or maybe you might have a vacume hose off or cracked or a passage is blocked or it could be your throttle body intake tube could be loose,off or cracked. then after checking all of the above replace wire harnest for the spark plugs and spark plugs and it should fix your problem.