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o2 sensor help!
I cannot find where my upstream o2 sensor is! I've looked everywhere and I've even looked online all over..Im trying to fix it myself because I don't have money to get it fixed..I have an 04 with a 3.8 engine |
There are 2 oxygen sensors on your car . One is located on the backside of the engine where the exhaust leaves the engine.(upstream) and the other is located next to the catalystic convertor in the exhaust pipe(down stream). Good luck .
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Originally Posted by Jeffs02rwdSS
(Post 714645)
There are 2 oxygen sensors on your car . One is located on the backside of the engine where the exhaust leaves the engine.(upstream) and the other is located next to the catalystic convertor in the exhaust pipe(down stream). Good luck .
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Originally Posted by hfsitsshay
(Post 714651)
thanks! I hope that's the right one? the guy that looked at it said it's the one before the cadilac converter Its difficult to even see unless you rock the engine forward. You CAN see it if you know what youre looking for but still can be hard to find. |
https://cimg7.ibsrv.net/gimg/monteca...caf0653003.png
This drawing is a nice shot of it (looking straight at the back of the engine from the firewe all side). |
Originally Posted by wht02monte
(Post 714657)
The one nearest to the cat is the downstream. The upstream is basically IN the rear exhaust manifold. Certain on this.
Its difficult to even see unless you rock the engine forward. You CAN see it if you know what youre looking for but still can be hard to find. |
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