95 integra ls with gsr swap i just noticed that my car starts to overheat at a low rpm or idle other than that it runs good new thermostat fan hookedd to switch no oil in water no water in oil headasket was replaced when i swaped the motor but was overheated shortly after due to a broken hose helppp white smoke high rpm

 

Have you done any compression or leakdown tests?

 

faulty radiator?

 

sounds like it, if the thermostat is good and the coolant level is correct then radiator would be my guess