O2 sensor location

Tiny
DECKJ
  • MEMBER
  • PONTIAC GRAND AM
Hi I am going to replace an o2 sensor on my 96 grand am gt. I have heard it is on the exhaust pipe in front of and in back of the cat converter. I only see the sensor behind the converter and it is the one before that I need to replace. If you can tell me where it is it would be very helpful. Is it on the manifold?
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Wednesday, August 23rd, 2006 AT 7:34 PM

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Tiny
MIKEYBDMAN
  • MEMBER
Which engine do you have?
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Wednesday, August 23rd, 2006 AT 7:35 PM
Tiny
DECKJ
  • MEMBER
[quote="Mikeybdman"][quote="deckj"]hi I am going to replace an o2 sensor on my 96 grand am gt. I have heard it is on the exhaust pipe in front of and in back of the cat converter. I only see the sensor behind the converter and it is the one before that I need to replace. If you can tell me where it is it would be very helpful. Is it on the manifold?[/Quote]

which engine do you have?[/Quote]

i have a 3.1 v6
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Wednesday, August 23rd, 2006 AT 7:36 PM
Tiny
MIKEYBDMAN
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Which engine do you have?[/Quote:4bc284fe8d]

On a V6 model the HO2S1 is located in the rear exhaust manifold. Right before it connects to the exhaust pipe. The HO2S2 is located behind the cat converter.
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Wednesday, August 23rd, 2006 AT 7:39 PM
Tiny
DECKJ
  • MEMBER
[quote="Mikeybdman"][quote="Mikeybdman"][quote="deckj"]hi I am going to replace an o2 sensor on my 96 grand am gt. I have heard it is on the exhaust pipe in front of and in back of the cat converter. I only see the sensor behind the converter and it is the one before that I need to replace. If you can tell me where it is it would be very helpful. Is it on the manifold?[/Quote]

which engine do you have?[/Quote]

On a V6 model the HO2S1 is located in the rear exhaust manifold. Right before it connects to the exhaust pipe. The HO2S2 is located behind the cat converter.[/Quote]

thank u very much. You responded quite quickly too. I think I know where it is then. There isnt anything I could be getting it mixed up with is there?
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Wednesday, August 23rd, 2006 AT 7:42 PM
Tiny
MIKEYBDMAN
  • MEMBER
Which engine do you have?[/Quote:1ffc3c7d1c]

On a V6 model the HO2S1 is located in the rear exhaust manifold. Right before it connects to the exhaust pipe. The HO2S2 is located behind the cat converter.[/Quote:1ffc3c7d1c]

thank u very much. You responded quite quickly too. I think I know where it is then. There isnt anything I could be getting it mixed up with is there?[/Quote:1ffc3c7d1c]

Nope. Should be the only sensor with wires going to it in the exhaust manifold.
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Wednesday, August 23rd, 2006 AT 7:43 PM

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