I have a 1991 Olds 98..... A month ago the Crank Sensor Pig Tail plastic broke into pieces due to dry rot..... the engine was running very well up to that point. Since then, even though replacing the Crank Sensor several times and even replacing the balancer....the car fails to start now........ I have replaced the ICM and the coil pack brick. I've tested the wiring harness for continuity from the ICM to the crank sensor, CAM Sensor, and to the connector near the firewall. I had another ECM and switched it out with no luck. I have no spark when I put my spark tester on it....... what now????