FavoriteMystaque
Hard-core CEG'er
- Joined
- Oct 16, 2004
- Messages
- 1,192
Also known as HO2S-11 switching (problem) in Ford-speak. I used a Ford Motorcraft DY738 Ford number F5RZ9F472B, perfect fit. Very difficult installation. I followed this procedure http://www.contour.org/ubbthreads/showflat.php?Cat=&Board=v6maint&Number=1023736&Forum=v6maint&Words=replace%20o2&Match=And&Searchpage=0&Limit=2500&Old=allposts&Main=1023736&Search=true#Post1023736 The procedure is correct, except at least on my 1998 Automatic Duratec Mystique, there seems to be even less room back there. My hand could not fit through the tiny spaces. It may be necessary to remove that rear wiring harness, or prybar it. Someone had to jack up the engine in an old post I read. We got it loose with a crow's foot on a long pivoting ratchet and a box wrench for leverage (carefully). Then 1/4 turn at a time, it came out. The sensor wiring actually retightened the sensor when the wrench was lifted, because of the wire twist! It come out, but the new one had to go in with a fuel line hose 5/16 used as a flex shaft with a slot in it to accept the wiring. A "modified" coat hanger was used to support the sensor and guide it into the hole while slowly rotating the hose. It caught and threaded in, and a snugging with the 7/8 box wrench finished it. I really hope the CEL stays off after reset, and the sulphur smell stops!
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