Hello,

Is replacing the o2 sensors pretty straightforward as to just unscrewing the old one and screwing the new one in?!

 

That will depend upon how easy or difficult it is to get the necessary tools to them. I would watch plenty of Youtube videos of folks doing oxygen sensor replacements on these 3rd generation RXs before tackling the job. I would also spray the base of the sensor with PB Blaster and let it soak in for a day or so before putting a wrench on it. That may make the job much easier for you.

 

Does WD-40 work as a PB blaster? Or is that a special lubricant?

 

PB Blaster penetrates much better. Worth picking up a spray can of it. Walmart typically carries it.

 

Thanks! Good to know 👍