03-15-2012, 10:59 AM
Join Date: Nov 2010
Location: In my own imaginary world, where. Respect for women is overrated
Name: Matt, a worthless husband!
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| | How To change o2 sensors (downstream) PIC HEAVY!!!
So I swapped out the rear (downstream) o2 sensors on my truck yesterday. prolly will swap out the upstream in a few weeks, just to be new all over. as usual, i ordered my parts from Rockauto. I went w/ Motorcraft parts (they werent that much more than generics). I was pleased to see that they were shipped w/ anti-sieze already on the threads. the electrical connections are color coded so you can't put an upstream module into a downstream port. Purple is down stream. Grey is upstream. All I used was a crescent wrench. Make sure to disconnect your battery when swapping these out. Took me 20 min to swap both of these out. And onto the pics:
Here are the plugs, w/ the driver side already removed.
Driver side downstream o2 location:
driver side downstream o2 electrical connection:
driver upstream o2 sensor:
passenger downstream o2 electrical connection:
passenger downstream o2 sensor:
Last edited by VanoFord; 02-16-2013 at 11:29 PM.