I recently just replaced the radiator, the fan, and the thermostat in my 2000 Mitsubishi eclipse gs and it is still overheating I don't know why, I checked the water pump and it is fine is there anything else I need to check besides the temp gauge sensor and the pump?

Hey I just bought this 2001 Eclipse GT with a 5 speed transmission and I had noticed my engine was over heating when I slowed down. I thought it was the thermostat so I changed it. during the refill the resivor was full but the radiator was empty. I poured a half gallon of fluid to start it off...

Ok i have a 2000 mitsubishi eclipse gs with 58k on it and i notice yesterday that my coolant is like a tan color and i use green.I dont know if i need a flush but i just got a new Radiator on 4/26/11 also new upper and lower rat hoses so im lost any ideas please share thx