65 Fastback Starting Issue

[65-Fstbk]

Hi All,
I'm hoping you can help me diagnose a problem. Not sure if I have a bad battery or not but the car will start and I can drive it but when I get to my destination stop the motor then try to start again it's like the battery is dead. Very slow cranking (almost none) so I have to jump start the car to get it going again. So weird. Also my voltmeter is showing like 15v when running?
Any thoughts appreciated.

 

[Noobz347]

Either your starter solenoid or power and ground cables are in bad shape or lack good connections or your starter needs to be rebuilt.

If it's a Motorcraft starter, I would have it rebuilt versus replacing it with an off the shelf Chinesium unit.

 

[AeroCoupe]

Voltage drop test all your cables and connections.