I have a 1998 toyota cammry 2.2 or 4 cylinders and have two separate ignition coils. One plugs in #1 & #4 cylinders the other ones go to #2 & #3 cylinders. The car died out on me while I was driving. I checked the spark plugs and only cylinders #1 & 3 have a sparks. Could it be both ignition coils are defect? Need help!