Ive had this car broke down for awhile now would like to get it goin. It died and was told it was pcm. It had no spark or injector pulse. You could tap the computer and get it to run for short periods of time. When u shook the old computer it rattled loudly inside. I bought a new one from napa. Put it in, and it hasnt start since. The best thing of all is that if you charge the battery fully it will start and run perfect for 40 sec or so then will not restart. I just put a new battery in it from napa as well as told by last mechanic that worked on it. I have had 2 mobile mechanics and one family friend mechanic look at it, getting very frustrated. Does this pcm need flashed? or anything done to it before installing? Im lost thanks