Well, last summer my 95 240sx with stock KA engine started acting up. I was driving down the road and it just shut off--no sputter or indicator lights. After I would let it sit and seemingly cool down for about an hour, it would run again and then do the same thing. It took me 2 hours to get 15 miles. Brought it home and ran a scan--knock sensor came up bad (which I heard can be thrown off by other issues) and I replaced it. Also replaced spark plugs and wires, water pump, thermostat, coolant temp sensor and got a new/used distributor thinking that it might be the sensor inside. Still nothing. I can get it to turn over and it runs for about 1 second then shuts off again. Does any body know what might be the problem.