I have replaced the battery, ignition, alternator, all wires, coil. My 1993 Convertible will still leave me stranded on a road trip more than 25 miles. It acts like it's completely dead with no power and even when jumped...won't start. At first I thought it was due to heat but it will do it so randomly during cold or hot weather. Does anyone have a clue what causes this? So frustrated, Love this car but enough of driving home on a flatbed because I drove out of town.