I have an 04 concorde and every once in a while it will start missfiring when accelerating above 3k rpm and has even died several times while driving down the road. most times this problem was corrected by shuting car off and restarting but issue is becoming more prevalent. what issues could cause this. it appears to be something electronical. and could it be related to a failing NVLD.

 

what are the codes in the computer?