so my 87 bronco only likes to start when its not been driven for a couple hours. if i let it sit over night and go out in the morning, it'll start right up over and over until it's hot. after i drive it anywhere and the motor is nice and hot, it won't start again after i shut it off. it sounds like it's a dead battery which doesn't make sense because the gauge reads about 12-14V. i've already replaced the battery, alternator, voltage regulator, solenoid and the battery cables. any ideas???