P0303 Nissan -

Question

I HAVE A 2002 NISSAN MAXIMA SE 6SPEED. IT HAS 272000 MILES ON IT. I WAS DRIVING TO WORK TODAY AND OUT OF THE BLUE IT FELT LIKE ALL 4 TIRES WERE FLAT, I LOOKED DOWN AND THE SES LIGHT WAS FLASHING. I PULLED OVER AND CHECKED WITH MY CODE READER AND IT READ P0303 AND P0303PD? I REPLACED THE PLUGS ABOUT 90000 MILES AGO AND HAVE NEVER REPLACED THE COIL PACKS. WHEN I ACCELERATE THE CAR IS ROUGH AND LOSS OF POWER, WHEN IM CRUISING AND ACCELERATOR IS BARELY IN ITS SMOOTH? I GUESS ILL PULL THE REAR PLUG OUT AND REPLACE IT AND WAS THINKING ILL SWAP THE #2 PACK WITH #3 AND SEE IF THE CODE WILL GO AWAY OR CHANGE TO #2? ANY HELP WOULD BE GREAT.

Answer 1

Your doing exactly what needs to be done. swap the coil from one cilinder to an other and the same with the spark plug drive  the car, code will set where the problem is. if it continues on cylinder 3 you may want to check injector and possible compression check.