I agree, it is not smart to put it at the back of the engine, but we looked for it at the front of the intake and everywhere else nearby. I need a shop manual since the 2002 V6 is not anything like the earlier versions. I have posted on three Mustang boards and no one can actually tell me where it is. Even the guys at Auto Zone could not locate it. I called a repair shop and they told me it is located at the rear on the head casting. Tomorrow I will get out there and ave a look with a mirror.