Purchased 93 Cummins 8.3 pusher. Running some Hot. Creeps slowly to 225. I pull over and immediately goes down in about 3-5 min. Can travel about 50 miles and I repeat cycle. Apparently the side radiator has been flushed. Full of antifreeze mix. Where do I start. Also more big horns on top don't work. Fuse?

Dwin Ollison
Manager
The Car Exchange
Eldon, Missouri, USA