Nissan Repair: overheating, nissan urvan escapade, electric cooling fan

Question
i have nissan urvan escapade 2006 model. I already repair the top overhaul. i change thermostat, i overall the radiator and also change radiator cap and the water pump. But still overheating. When i drive an hour for the speed of 80 to 100 kph the water dripping in my reservor. but if i drive only 40kph to 60 kph. the water from reservor is not dripping. in short long driving always overheat but if is traffic its not overheating. i dont know what to do with my van. please help me to solve my problem with my van.

Answer
Hi Myra -

I will try the best I can. We do not have that model car here, but can you check the electric cooling fan. Is that working? If you have Air conditioning turn it on and the fan should be working.

Please check this and get back to me -

Thank you
Aloha
Calvin