I purchased a preowned Altima 1996 just a week ago. I got this car as a
second car for errands, ect and decided on a Nissan for reliablity.  I had
this car one week.  Three times it has all of the sudden while driving
start to misfire, sputter, lose accerlation, drop in RPM's and just won't
go.  I had to pull over on the highway and have it towed the first time.
Then the dealer diagnosed from the engine computer codes it was the spark
plugs and wires so they replaced these.  I had the car back one day the
engine light is back on.  I drove to the dealer and they told me to come
back on Monday if the light is still on.  Well today while out doing my
errands, the car started to cut out, sputter, lose accerlation and I had
to pull over on the highway.  I was driving on the shoulder for about 2
miles then it started to run okay.  I was just thankful to get the car
home without getting stranded, again.  What could be the problem with this
car.  I asked them to refund my money and they are blowing me off regarding
this option.  ANY suggestions are appreciated.