Hey guys well I have a 99 Honda civic ex coupe out has 175000 miles on it and it's a sohc. Recently my car has been acting funny like it would have a hard time starting, and at times while on the expressway it would lose power and turn off. Here is what I did so far. New main relay, new distributor new wires and plugs new crankshaft sensor new fuel pump new fuel filter . Only thing I have not changed is the computer and the ignition switch. What else do you guys think it could be?