2008 Club Golf Cart runs fine then just stops

I have a 2008 Club Cart Precedent. New Trojan batteries, connections are good, I am getting correct voltage through out system from batteries to Solenoid. My issue is that whenever i am driving for long periods of time more of stop and go as in a parade my cart dies. I have to wait a few minutes then the power comes back on and it drives fine for a bit. It is not the batteries dying. I am thinking that something is over heating which makes me believe it is the solenoid (it does click when i turn it on and off) or the controller. Any ideas what could be causing the cart to basically shut down and then a few min later it runs fine for a while then shuts down again. It is not the batteries being bad or losing power. Can a Solenoid simply over heat and stick like an old relay would? thanks Jim