1998 Oldsmobile Silhouette Logo
Posted on Nov 12, 2010
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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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  • Posted on Nov 12, 2010
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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.

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1helpful
2answers

I have a 2002 madza protege with 160K miles, the check engine light is on and the code is for O2 senser and misfire. I changed both coils,plugs, and wires and still smokes with fuel smell. I havent changed...
you need to change the o2 sensor
Read full answer
Dec 05, 2012 • Mazda Protege Cars & Trucks
tip

How to Test the O2 Sensor of Bentley Arnage car?
O2 sensor needs to be replaced when you get low gas mileage in car.
So before replacing the sensor it needs to be tested.
The procedure to test O2 sensor is as follows: ---
1) First drive the vehicle for 15 minutes in normal temperature.
2) Then Stop the vehicle in park mode and turn the engine off.
3) You will see primary O2 sensor on the exhaust manifold, the manifold will be very hot to touch so take care.
4) The function of O2 sensor in the car is to measure the amount of oxygen in car and then send that information to engine to adjust fuel pressure.
5) Now to measure the O2 sensor reading. Carefully disconnect the wire at the O2 connector, and hook the positive lead of volt meter to the O2 sensor side of the connector and connect the positive lead of volt meter to harness side of the connector.
6) In the O2 sensor you will notice two black wires that are not used for testing.
7) Now before beginning the important part of the testing procedure, check out properly that wires of O2 sensor and wires of volt meter are not getting touch to any other metal part or the manifold.
8) After checked and confirmed. Now start the car and see the voltage in engine idle position.
9) The reading will go high or go low but the average reading that it should show is 500 mV.
10) Now let the engine run and with engine running disconnect the fuel pressure regulator vacuum hose, and plug the hose with your finger.
11) The 500 mV reading will go to 700-800 mV.now remove the finger the reading will fall low to 300 mV.
12) But if these readings are not showing properly that indicates the fault in the sensor.
13) The secondary O2 sensor is located after the catalytic converter. The procedure to measure secondary O2 sensor is exactly the same like how you measured the primary O2 sensor.
14) The secondary oxygen sensor is located under the car.
15) Put the car on jack stands on the rack, this will give you proper sensor location in the car.
16) You can test secondary O2 sensor to conform the fault before replacing the O2 sensor.
17) The cost of replacing the O2 sensor is near to $100.This cost is for if you do it yourself.
This will help. Thanks.
Read full tip
on Mar 22, 2010 • Bentley Arnage Cars & Trucks
tip

How to Test the O2 Sensor of Cadillac Devile car?
O2 sensor needs to be replaced when you get low gas mileage in car.
So before replacing the sensor it needs to be tested.
The procedure to test O2 sensor is as follows: ---
1) First drive the vehicle for 15 minutes in normal temperature.
2) Then Stop the vehicle in park mode and turn the engine off.
3) You will see primary O2 sensor on the exhaust manifold, the manifold will be very hot to touch so take care.
4) The function of O2 sensor in the car is to measure the amount of oxygen in car and then send that information to engine to adjust fuel pressure.
5) Now to measure the O2 sensor reading. Carefully disconnect the wire at the O2 connector, and hook the positive lead of volt meter to the O2 sensor side of the connector and connect the positive lead of volt meter to harness side of the connector.
6) In the O2 sensor you will notice two black wires that are not used for testing.
7) Now before beginning the important part of the testing procedure, check out properly that wires of O2 sensor and wires of volt meter are not getting touch to any other metal part or the manifold.
8) After checked and confirmed. Now start the car and see the voltage in engine idle position.
9) The reading will go high or go low but the average reading that it should show is 500 mV.
10) Now let the engine run and with engine running disconnect the fuel pressure regulator vacuum hose, and plug the hose with your finger.
11) The 500 mV reading will go to 700-800 mV.now remove the finger the reading will fall low to 300 mV.
12) But if these readings are not showing properly that indicates the fault in the sensor.
13) The secondary O2 sensor is located after the catalytic converter. The procedure to measure secondary O2 sensor is exactly the same like how you measured the primary O2 sensor.
14) The secondary oxygen sensor is located under the car.
15) Put the car on jack stands on the rack, this will give you proper sensor location in the car.
16) You can test secondary O2 sensor to conform the fault before replacing the O2 sensor.
17) The cost of replacing the O2 sensor is near to $100.This cost is for if you do it yourself.
This will help. Thanks.
Read full tip
on Mar 22, 2010 • Cadillac DeVille Cars & Trucks
1helpful
1answer

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.
Read full answer
Mar 10, 2012 • Chevrolet Cavalier Cars & Trucks
1helpful
1answer

Had o2 sensor bank 2 # 2 replaced , 1 week later engine light is back on . where is this sensor located and why does this one keep going bad?
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.
Read full answer
Feb 01, 2011 • GMC Sierra 1500 Cars & Trucks
tip

How to Test the O2 Sensor of Acura Integra car?
O2 sensor needs to be replaced when you get low gas mileage in car.
So before replacing the sensor it needs to be tested.
The procedure to test O2 sensor is as follows: ---
1) First drive the vehicle for 15 minutes in normal temperature.
2) Then Stop the vehicle in park mode and turn the engine off.
3) You will see primary O2 sensor on the exhaust manifold, the manifold will be very hot to touch so take care.
4) The function of O2 sensor in the car is to measure the amount of oxygen in car and then send that information to engine to adjust fuel pressure.
5) Now to measure the O2 sensor reading. Carefully disconnect the wire at the O2 connector, and hook the positive lead of volt meter to the O2 sensor side of the connector and connect the positive lead of volt meter to harness side of the connector.
6) In the O2 sensor you will notice two black wires that are not used for testing.
7) Now before beginning the important part of the testing procedure, check out properly that wires of O2 sensor and wires of volt meter are not getting touch to any other metal part or the manifold.
8) After checked and confirmed. Now start the car and see the voltage in engine idle position.
9) The reading will go high or go low but the average reading that it should show is 500 mV.
10) Now let the engine run and with engine running disconnect the fuel pressure regulator vacuum hose, and plug the hose with your finger.
11) The 500 mV reading will go to 700-800 mV.now remove the finger the reading will fall low to 300 mV.
12) But if these readings are not showing properly that indicates the fault in the sensor.
13) The secondary O2 sensor is located after the catalytic converter. The procedure to measure secondary O2 sensor is exactly the same like how you measured the primary O2 sensor.
14) The secondary oxygen sensor is located under the car.
15) Put the car on jack stands on the rack, this will give you proper sensor location in the car.
16) You can test secondary O2 sensor to conform the fault before replacing the O2 sensor.
17) The cost of replacing the O2 sensor is near to $100.This cost is for if you do it yourself.
This will help. Thanks.

Read full tip
on Mar 22, 2010 • Acura Integra Cars & Trucks
0helpful
1answer

My 2000 Maxima stalls in cold weather when I back it out of the garage and runs rough until it's fully warmed up. Dealer changed the air meter (I think) which was ridiculously expensive at $990.00. It...
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.
Read full answer
Jan 19, 2011 • 2000 Nissan Maxima
0helpful
2answers

My 96 Chevy Blazer 4X4 failed echeck, due to codes: P0132(bank1, sensor1), P0135(bank1, sensor1), and P0143(bank1, sensor 3). All are O2 sensor codes. What sensors need replaced, and where are they...
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.
Read full answer
Dec 19, 2010 • 1996 Chevrolet Blazer
1helpful
3answers

Toyota Harrier yr2001. been great so far. engine
the knock sensor should also be checked this can cause the engine light to come on a few minutws after driving begins
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Oct 09, 2009 • 2001 Lexus RX 300
0helpful
1answer

(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.
could have wiring damaged need to check if signal from O2 sensor is getting to engine ECU.
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)
or with multi meter back probe ECU connector O2 signal wire to see what reading if any getting to ECU.
Read full answer
Jul 19, 2009 • Isuzu Trooper Cars & Trucks
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