I have a 91 Integra and It heats up way to hot. While it is doing this I turn the heat on it is cold. No heat in my vents while it is over heating. Mostly happens when I am in stop and go traffic. Just changed the thermostat, water pump, and radiator. What else can cause this? PS No fluid leaks in my system

 

all i can think of is you might of gotten a shitty thermostat. it happens. i know people who've had bad luck with 2 or 3 before they got a properly working thermo. GL with this issue

 

Is there anything in your cooling system that controls it other then thermostat, water pump,and radiator/ fan?

 

Sounds like thermostat issue have it checked