Mitsubishi Pajero Water Pump Problems

car overheats as soon as you put any load on the car ie on tick over its fine but if you drive up the road the temp goes from med to high in an instant and bubbles up in the expansion tank until all water has been evaporated has been teste...

Help..... I have dripping coolant from just behind the thermostat. When the car is not running there is no drip. When its turned on it starts to drip and I have read in Haynes that this is to tell you the water pump is busted. Is this ri...