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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I have a p1137 code fuel air metering on a 2002 chevy cavalier where is this located


Air/fuel metering usually referes to O2 sensors and/or MAF sensor. In this case it referes to heated O2 sensor bank #1 snsr2. This Can be found on the exhaust system on the rear of the cat or after the Cat. Conv.

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It is possible that the sensor was not bad to begin with. Some times another problem will cause the O2 sensor to show a condition when all it is doing is what it is supposed to and a lot of guys will change it. I ran into this myself. I had a code so I had it read. O2 sensor showed a lean condition so the guy suggested I change it. Except it didn`t say which one and there were 4 of them. Didin`t make much sense to me. Turned out I had a bad lower intake gasket which caused the lean fuel mixture because of the un-metered air. All the sensor did was tell me the truth. It did its job. I know this don`t answer your question but this is where a good mechanic comes in and the sensor is located in the exhaust pipe close to the catalytic converter.

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You might check the IAC valve, Idle Air Control valve. That lets the vehicle know where to idle especially when cold. Normally Air flow meter and O2 sensors will trigger a check engine light and set a code that allows the tech to try and diagnose the problem. Also, possibly check the Throttle body to make sure it is not clogged up and completely dirty inside, that too can cause issues. If this helps please give some thumbs up. Good luck.

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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.

O2 sensors need a special socket to remove, and are best done when the exhaust is hot, and, also, antiseize compound should be used on the threads with the new O2 sensors.

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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(o2 sensor indicator light cancel switch.) I need to fix this. I changed my o2 sensor and the light hasn't gone off, and it runs the same weather or not the sensor is pluged in or not.


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can see this in data display using tech2 or scanner O2 sensor reading would be around 450mv all the time indicating open circuit(this is a default reading used by ECU)
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