Question about 1998 Oldsmobile Silhouette

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I need to change my O2 meter but have no idea where it is located or how to do so.

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If you mean the O2 sensor, you have at least two and they are located in the exhaust system before and after the catalytic converter. If you are sure one or both is bad you can buy new ones at a parts store, then stop by a muffler shop and pay them 20 bucks or so to take yours out and put the new ones in. Bear in mind that if this does not cure your SES light problem, all they did was put in your parts so it is not their fault. Having the thing up on a lift and a good selection of tools makes it a lot easier and faster than trying to do this yourself on your back under the car, in the cold wet dark, with no leverage. Do not try this at a chain muffler shop.

Posted on Nov 12, 2010


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Some of your O2 sensors are before the catalytic converter and some are after, based on your description. I've seen some cars that had to have all of the O2 sensors replaced when the exhaust system was replaced.

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Be prepared to have an exhaust technician change them out for you in order to get it passed the eCheck.

Good luck on this repair.

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