I have a 1989 Nissan Patrol GQ, and i'm having problems with the cooling system, it doesn't quite overheat but gets quite hot. I have replaced the water pump as it was leaking, i have replaced the thermostat and i have pressure cleaned the front of the radiator. My next thing to try would probably be the thermocoupling.
Is there any more suggestions of what could be wrong and how i could fix it?