A week ago the temp. would always stay at the middle of the meter and slowly going up when i turn up the A/C. But recently the temp. was so high that the radiator exploded.. and we weren't even moving. i changed the radiator but i saw that the temp. was going up really fast just after have the car on for a few minutes. i changed the fan cluch, seeing that it didnt fan as strongly once it started to get hot. and i changed the termostat. but still im having the same problems. im thinking its the water pump sending back the coolant into the radiator preventing it from circulating. i know it cant be the temp. sending unit since the engine really does get hot.
Any ideas what the problem is will be greatly appreciated. Thanks.