I've had a electrical miss that's been going on for almost 1 1/2 months. It's now so bad I didn't think I'd get to work today. In the past as long as I left it in gear it would fire back up. When it does miss it does so several times. It always begins once the truck is warmed up. Today it flat died 15 minutes after startup. I changed the coil. I'm now thinking the main computer. (ECU I believe it's called). Any ideas?