My stepdad has a 1996 3.8 auto and we've been trying to get it running for a while now. It's been sitting for a while but about a year ago it wouldn't start and just cranks. He said the battery was dead and went to jump it and then it just cranked. It's getting fuel for sure, but no spark. We've replaced the ignition coil and the pcm and nothing. We've also checked all the fuses and they're all good. Any advise would be very appreciated