Is there a general rule on when to change the O2 sensor?  My O2 sensor is assumed to be working but has 104,000 miles on it -- it's the Tracker O2 sensor so it's like $120!!! Should it be changed based on a certain number of miles?

It depends. However, if you've got that many miles on your O2 sensor, it should be replaced. I hear between 60,00-90,000 a lot.

What year Tracker? I just replaced the California-emissions O2 sensor on my '95 and it cost me $80. It would've been $10 cheaper if it wasn't CA emissions.

- Andy

You can get one from rockauto.com for around $40....last time I checked.
I have a discount code for 5% off, if you are going to order anything from there.

I'll order one tomorrow from rock auto.

I have seen their site before and was skeptical bc I've never seen that layout design before -- but now that I know part names I'll start ordering from there ...they probably ship faster too

discount code is:

60515785028722


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