Hi i have a strange problem with the galant. It starts to die as if the battery is drained over time driving. All the dash lights come on and the speedo and rpm guage start to freak out the radio dies. And eventually shuts off. It won't start as the battery is dead like the alternator is not charging, but it is. When i dies the battary is good voltage and the alternator charges. Over some time like 30-40 minutes of cooling down it will start again and will run for some time and will do this all over again. I have checked the engine grounds and the normal ground. What can the issue be?