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o2 Sensors Replace?

 
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Old 21 Aug 2011, 08:21 pm
My02RedRide's Avatar
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Default o2 Sensors Replace?

Just curious on how many of you change the upstream or down stream o2 sensors and at what mileage? If changed, what was the reason? Routine maintenance or actual fault code?
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Old 21 Aug 2011, 08:24 pm
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Default Re: o2 Sensors Replace?

Changed both for routine maintenance at about 99,000 miles. Never had a fault.
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Old 21 Aug 2011, 08:48 pm
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Default Re: o2 Sensors Replace?

Quote:
Originally Posted by CREWZIN View Post
Changed both for routine maintenance at about 99,000 miles. Never had a fault.
Did you notice any change in performance or mpg afterwards?
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Old 22 Aug 2011, 09:38 am
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Default Re: o2 Sensors Replace?

Yep changed the one before the cat, bad fuel mpg's, way better afterwards!
it was acting lazy on scanner!
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Old 22 Aug 2011, 10:56 am
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Default Re: o2 Sensors Replace?

I think I'll change the upstream today. When at running temp the engine feels a bit sluggish. Car has 107,000 miles and PO never changed either sensor. Downstream is typically for cat effeciency and the upstream does all the work.
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