So just to be clear, you just bought this car and since you bought it it has run that hot and so far u have replaced the thermostat and radiator cap? If that is the case I would check a few things, 1; how's the heat? If the water pump was failing, Likely the heat would be poor. 2; when it is running hot, how do the radiator hoses feel? Are they burning up too? Also do u have one of those laser thermometers to determine that the engine is in fact running that hot and you don't just have the wrong sender for the temp gauge. 3; when it's running hot, feel the air the fan is pulling thru the radiator, it should be really hot! If not, perhaps the radiator has some clogged passages and is only flowing on the sides. And finally, does the engine ever cool down with certain driving types like higher speed with lots of air flow across the radiator? Keep us posted with as much info as possible and we will do our best to help!
