1994 Hyundai Excel with 125,000 miles just completely shut off when I was driving down the road. It had a quarter tank of gas in it. I have replaced the following: distributor, distributor cap, ignition coil, spark plugs and the wires, battery, check all fuses and still the engine turns but without start. I only gets a spark through only one plug. tooked the car to a mech. and he returned back without hope. I am searching for a used ECU as a last resort. could you tel me What is wrong?[/b]