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Old 01-17-2013, 04:47 PM
professorman professorman is online now
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Location: Virgina
 
Join Date: Dec 2012
Posts: 172
Mein Auto: 2000 525i
Quote:
Originally Posted by ian@jewelorjalopy View Post
Nope, what Ed says. They are only there to measure the cat efficiency, and will tell you when they go bad. If they don't throw a code, keep them.
How about the pre-cat oxygen sensor for me? I have 168k miles. Should I replace them 'just because', or wait for something?
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