2.5 l. 120,000mi, automatic,Rio, After it warms up it won't start or even turn over.. just a single click sometimes... the volt guage goes very low like 10-11. But when it's cold the volt guage is up over 14 and starts with no problem. Until it doesn't. Changed alt,belt,battery.
Sounds like it's time to replace the starter and solenoid. Don't buy a cheap one