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Where are the 2 Oxygen sensors located?

 
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Old 13 Mar 2017, 12:24 am
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Exclamation Where are the 2 Oxygen sensors located?

Hello, I brought from Rock Auto the up & down stream Oxygen Sensors for my 2003 Base model. I have codes like 0325, 0441, 0440..and tired about the engine light on. So this is a trial and error.. *crossing fingers for good results.

Now, I know that one is behind the motor towards the windshield...but no idea where goes the other one.

Searched some diagrams but either all the same or from other cars.

Can someone post a picture or video to guide me on this first DIY?
Thanks for read.
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Old 13 Mar 2017, 06:20 am
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Default Re: Where are the 2 Oxygen sensors located?

You actually have to get under the car and take a look at your exhaust pipe in order to find the downstream sensor. Either get yourself a set of ramps or jack stands. DO NOT get under the car with just a jack holding it up. It could be the last time you ever get under a car. And if you don't have an O2 socket, it's not a bad investment.
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Old 13 Mar 2017, 09:05 am
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Default Re: Where are the 2 Oxygen sensors located?

The upper O2 sensor on the NA non-turbo PT is located in the top center of the exhaust manifold. You can either reach it from beneath the car or you can remove the intake manifold and reach if from the top under the hood. Going from beneath is easier as long as you don't need to be able to clearly see what you are working on.

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Old 13 Mar 2017, 09:48 am
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Default Re: Where are the 2 Oxygen sensors located?



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Old 13 Mar 2017, 11:27 am
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Default Re: Where are the 2 Oxygen sensors located?

Quote:
Originally Posted by CREWZIN View Post


^^^ Is that your PT? In the pic, the lower bolt holding the shield appears to be broken off.
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Old 13 Mar 2017, 11:45 am
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Default Re: Where are the 2 Oxygen sensors located?

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Originally Posted by rckstein View Post
^^^ Is that your PT? In the pic, the UPPER bolt holding the shield appears to be broken off.
Yes, that's mine. Right after I bought the PT, the FLEX pipe in the exhaust sprung a leak. Took it to the dealer and after several rounds of talk and arguments, they agreed to replace the FLEX pipe under the emissions warranty. Long time after I noticed that that bolt was broken off and they were the only ones in that area so they must have done it but it wasn't rattling so I just left it alone. That's been about 12 or more years like that. Still holding on and no rattles. There's 3 other bolts that hold it on.
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Last edited by CREWZIN; 13 Mar 2017 at 11:53 am.
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Old 13 Mar 2017, 11:59 am
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Default Re: Where are the 2 Oxygen sensors located?

Quote:
Originally Posted by CREWZIN View Post
Yes, that's mine. Right after I bought the PT, the FLEX pipe in the exhaust sprung a leak. Took it to the dealer and after several rounds of talk and arguments, they agreed to replace the FLEX pipe under the emissions warranty. Long time after I noticed that that bolt was broken off and they were the only ones in that area so they must have done it but it wasn't rattling so I just left it alone. That's been about 12 or more years like that. Still holding on and no rattles. There's 3 other bolts that hold it on.
When I said LOWER, I was referring to the bolt at the bottom of your pic, but yes it is the UPPER bolt on the shield.
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