Hi Guys.

I need help in removing my exhaust. How do I go about it without destroying my oxygen sensor? I heard that some people or dealers damage the O2 sensors on the process of exhaust removal. Is that right? If it does,I would appreciate if you can share your experience on the proper sequence of exhaust removal without damaging the O2 sensors.
Thanks, AL

 

You want to unscrew them *before* you drop the exhaust. That is pretty much all that you need to do.

Make sure you put lots of antisieze on them when you put them back, and reverse twist the wires about 5 turns before starting the threads.

 

The better way is to unplug the 2 on each side where they connect in the engine compartment and then drop it

 

http://www.mkiv.com/techarticles/oxygen_sensor_simulator/

 

Thanks,Guys for your input. I am also trying to avoid bumper removal for this job, is that possible? Is there a specific tool for O2 removal and what size?...AL

 

More difficult without bumper removal. Bumper is a 20 min job, get it out the way. I would follow the wires up and unplug then drop (the way I did it). No risk this way, otherwise risk breaking wires at O2 sensors.

 

Thanks again everyone. Your input helped. I already unplug the O2 sensor and will be dropping the exhaust..AL

 

Unplug the O2 sensors in the engine compartment then drop the exhaust. Once the exhaust is on the floor you can easily get to the O2 sensors and unscrew them with a wrench and shouldn't damage them. BE SURE when you replace them into your new system YOU DO NOT get them mixed up! If you install the rear one in the front or the other way around, you will go to rich and or throw a CEL.

 

RickEager@***, thanks very much. Your input is totally appreciated. AL

 

Also, be careful when you apply the anti-sieze for reinstall. Just a dab will do and make sure it is ONLY on the threads. If you get any anti-seize on the O2 sensor head, it will foul it and you'll have to replace.