Radiator hose blew off, now car won t run at low rpm and ticks.?

I was driving to work and at some point the radiator hose blew off the radiator, opening the cooling system. The car was running fine till I came to a traffic light and found the engine would start dying at idle. I figured it was a carburetor issue and got it down the road to work. when I parked I lifted the hood and saw the radiator hose was off. I refilled the radiator and put the hose back on, and it seemed fine. After the choke turned off and the idle dropped below 1000, it started to keep dying and there is a ticking noise coming from it now. What does this sound like?