If you are standing in the front of the engine, It will be the big round object sticking up in the front of the left valve cover. It will have a pipe hooked to it that goes to the exhaust manifold. It also has a electrical connector hooked to it. May even be a vacuum hose hooked to it too. It is not in or on the valve cover, it's in the front of it close to the fan shroud. Here are the locations of the valve (below) for all engines with a video on how to test them
Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.
Images (Click to enlarge)
Wednesday, September 22nd, 2010 AT 9:47 PM