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my wife has a 2004 CR-V with the check engine light on that was diagnosed as a bad A/F sensor in the front (apparently there is a rear one too). The local Honda dealer wants an arm and a leg (and my first child) to fix that and I am wondering how easy it is to fix oneself. Saw some things here that indicated that it may not be so hard (with loaner tools). Anyone have "instructions" on how to do it and where I might be able to get the part for less that the $350+ that the Honda Dealer wants for it?

Appreciate the help!
 

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The problem with O2 sensors is they are rusted into the exhaust/cat converter and can be a real pain to get out. Soak the sensor with a good penetrating oil several times and let it sit. Disconnect the wire harness and use an O2 socket to remove the sensor. Use anti seize compound on the new sensor and torque it to specs.
 
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