My car has been going through spells of acting like it has 4 cycl. when it acts like this it shakes really bad when you give it gas at all. it acts like it misses. But it is deffiantly not. New wires, new coil, new ignition module. A friend said it could be an injector or probably a harness that plugs into the injector. Does this sound familiar to any of you??? if so where can I get new ones and splice into the old ones?