my 2001 2.5rs was having prolems misfiring on cylinder 2 and 4. So i did the easy thing ngk iridiums and magnecor wires, my check engine light dissapeared for about 2-4 days and then reappeared setting misfires on all 4 cylinders, is my coil pack bad or are the horror stories about magnecor causing coil pack problems coming true, Id appreciate any help or feedback. Thanks, Derek.