Hi all, lately I've been getting in my car and the fans will be blowing fully. That, or the battery is dead. On the rare occasion neither happen, it will really struggle to start anyway. Could this be a thermostat problem? I got my battery + alternator tested at 2 different shops today and they both passed every test. Then I went to a pull-it center for a few hours, came out and needed a jump. I just got an amp + capacitor installed for speakers but it didn't do this for the first month that I had them in. What could be the issue? Thanks.