Hey everyone. My 1987 944S 16 valve is not getting any spark whatsoever. Not at the coil and not at the spark plugs. I have tested numerous times with different spark plugs and different coils that I know are working. I also have a new speed/reference sensor. On the S there is only one. I properly spaced the new sensor and have gotten the car to run with it installed. Even though the sensor is new I checked the resistance at the sensor and at the dme harness and both times it came out well within specifications. I also checked for ac voltage at the dme harness and that also passed the test. I am getting 12 volts to both sides of the coil when the ignition is in the on position. I have gotten the car to start off and on and sometimes it will run for a couple days then I come out one morning and it will not start at all. I have tried different dme relays, dme computers, ignition relay, ignition control module and still nothing. I am maybe thinking it has something to do with the ignition switch because I'm not sure what else it could be. Any thoughts? Thanks to everyone who responds its much appreciated.