Thanks guys for all the input. Jack500, that was a great step by step. I will remember that for the future. Ke6dcj, one fan goes on while the other does not. I would like to check the electrical conection before ordering an expensive replacement.

Jach500, I am wondering if you have experience replacing the radiators on the w124 2.5's. Mine actually busted today at the top neck. Would you be able to help me with a step by step here?