How can I replace my O2 Sensors mysel...

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Author Message   jrov Posted on Monday, May 27, 2002 - 03:05 pm:    How do i figure out which two are out? Is there an easy way? I know where to buy them for cheap, but how to replace???   Anonymous Posted on Tuesday, May 28, 2002 - 01:50 pm:    Easy way: plug an ODB-II tool to your disco (assuming post-1996 ?) and find out which one(s) is(are) dead. Other way: try to replace them, clear the check engine light and see if it comes back. If it does... then switch them to the other side.... I was told not to put the front sensors to the back and the back sensors to the front.... ??? Still looking for a real explanation, this does not seem to apply to the Land Rovers (same sensors front and back). 2 cents, Loic,