i have a 89 Chevy 1500 with a tbi 350 it wouldn't start one day so i replaced the ecm still no start. ended up being the pickup in the dizzy. so i pulled it and put it back in the same way same spot. will run decent with the bypass wire unhooked but when you clear it and hook it up it starts and starts popping and running like ****? anyone know what's goin on? i need help!