My small heater hose busted and my husband replace it with a new one, but the temperature hand keep going up from 1/2 to hot what wrong, just started doing that when the hose busted. 91 honda accord

Don't drive the car, until you solve the problem. Otherwise, you run the risk of warping the aluminum head and damaging the valves.

The problem may be corrosion or mineral buildup inside the radiator; therefore, you may want to replace it.

Hopefully, this will help you:

https://www.askmehelpdesk.com/cars-trucks/faq-how-troubleshoot-repair-maintain-hondas-46563-3.html#post235973