[Zeke]

I've been chasing a miss in this '90 Cadillac I got when my mother died 4 years ago. I've spent a ton of time of this thing and had it running real sweet.

The miss came back and I've replaced fuel injectors and all kinds of things as per normal procedures. It did run nice when cold, but started acting up when it got hot. I began to suspect the plug wires and was unplugging them one at a time looking for the dead cylinder (rubber gloves and insulated pliers). The spark was jumping toward the coil pack and the car died. So, I burned what up? The pick up, the rotor? How do I test this stuff?

Edit: Coil tested good, module didn't, replaced module and still no spark anywhere. Pick up coil tests good. Hal effect sensor tests good. I did check the fuses since I had a bad experience there on another car (long story, short lesson). I do have power to the coil, etc. The problem is upstream and in the dizzy, there is no spark yet.

I have replaced the coil and retested the new coil. I've gone thru a few boxes of new coils and they all test the same. Not what the Internet says is right and that's really confusing. My coil(s) show .5 Ohms across the primarys and infinite from the + and - leads to the secondary with the resistor button removed.