over heating

What is your question?

I had the whole ac sytem replace and ever since then the engine has been running really hott. the machanic said he had to remove the radiator to install the ac compressor. the coolant level is full check for air open both bleeders knoew air i can rev the engine up and the temp will drop when i let the engine come back down to an idle it gets hot.please help me with this problem thanks.