1997 pontiac Grand prix gas no spark, need help figuring it out.
Hi Guys,
I am having a problem with my 1997 Pontiac Grand Prix GTP. 2 weeks ago my other half came home from my Daughter's house and parked the car. 2 days later, she went to go to the store and it would not run without severly misfiring, then just shut down. I started trying to figure out what went wrong. I started with determining if we had a fuel supply, which we do. Then I concentrated on the ignition side of things. First I checked to see if there was spark, none, next I replaced the ignition control module, still no spark. Then, I figured that the Crank sensor, that I just changed out last June was possibly bad, so I replaced that, and the cam sensor as well. Still no spark. Well, now I was a week into this and was pulling my hair out when my other half rented a OBDII code reader, it showed no codes stored, and no codes in history. I then ASSUMED, that was an indication that the ECM was bad and replaced it with a reman from Oreilly's auto parts, having it flashed at the warehouse. Still no spark, now, by this time, I have checked, and double, triple, and so on...all the fuses in both the under dash, and under hood panels, no fuses are blown. Now, I traced to see if we were getting power to the ignition control module on the connector, which we are. I then tested, as per the manual, the coil leads on the ignition control module. Which says to use a test light on both sides and see if there is a flashing light when it is cranked, still no luck. I have power in to the ignition control module, but not out via the coils. I then checked to see if the wiring harness that comes from the ECM to the ignition control module, to both the cam and crank sensors with a continuity tester, it tested good. I have also changed out the following, the nuetral safety switch, the ignition switch, and the wire harness associated with the switch. I hade had the Alt. checked, and the battery replaced. I have missed something, and I know it will be simple, but I could use some help in finding it. I have also tried resetting the alarm system, but it is not malfunctioning. Thanks Guys