HELP! 2000 pathfinder starts hard then shuts off

[dstmsp03]

i have a 2000 pathfinder with the 3.3L, my problem is it that it starts extremely hard, runs about 400 rpm, then shuts off.. when i try to start it after it does this... it will run for about 10 seconds at around 1100 rpm and shut right back off! i need help on what to look for.. i have great fuel pressure, just changed the fuel filter, dist. cap, rotor button, i am getting good spark on the plugs!

please help