Hello all,
As my post-count attests, I'm a newbie, but I have been lurking for a while, and have searched a bit.
I recently started seeing poorer milage, and then got a CEL about a week ago. Went to Auto Zone; they pulled PO133, which prompted me to purchase the new O2 sensor for Bank 1 upstream. With the instructions found here, and the help of the easter bunny's small paws, I hope to replace this weekend.
My question: this seems to be a common problem (2.5L w/ 69K) for bank 1, and I'm wondering if I should pre-emptively replace the upstream sensor on bank 2 as a precautionary measure.
I welcome your thoughts on this ... should I expect the bank 2 sensor to expire soon?
Thanks,
-Ed.
