is this before the catalytic converter or after sensor?
993035
This sensor is designed to be before the catalytic converter on a 3000 Chevy Blazer with a 4.3L V-6 engine.
1761479
Yes, this is the downstream sensor. The upstream sensor is actually an air/fuel ration sensor and costs ~3 times more than this one.
442873
This part fixed my 96 4runner with the 3.4 liter. It had a P133 code and this fixed it. Bank 2 sensor one code wich is the 02 sensor before the catalytic converter. Hope this helps
2097473
On my Volkswagen Jetta there were two sensors. One just after the catty and one on the exhaust manifold. the one with the long cable goes on the manifold. By the way, I recomend replacing the upstream first and see if this does the trick. Also get one of those cheap ODB blue tooth code readers and the free android or windows app called TORX. Understand and monitor the codes as you drive. One bad code is okay but two is not. I actually cleaned the caty by removing it and dumping acetone through it. Probably wont pass again and it was a lot of work.
1812057
I am mechanic and i dont see that is a air fuel sensor, if your car use air fuel ratio, it is not posible to chang for a second sensor, because the second is a oxigen sensor and work very different, you can not change.
1716999
it goes after the catalytic converter. the wiring goes up through the grommet in the floorboard under the passenger seat.
23424
I believe it is up stream . the catalytic converter was towards the rear as i replaced the sensor.
232945
There is no catalytic converter included. It does bolt up to your stock cat perfectly tho. I have a 2001 civic ex coupe and everything fits like a glove.
464651
In recent production years, there are always at least two sensors. The Upstream sensor which checks exhaust before the CAT, and one downstream either on the catalytic converter or just after. The differential of the two readings is what determines the air/fuel mixture and any given moment in time. So, you actually have two, one is on the exhaust manifold right at the header collection point. The other is actually centered on the CAT. ALWAYS replace both. It is recommended that you use the actual Honda part as it is a wider range device than the after market offerings.
145908
on my 2000 tundra..it's located before catalytic converter ..But I'm not sure on sequoia
1109183
The notes on the page say "UPSTREAM" - that would be before the catalytic converter. But, check your manual to be sure.
816062
In a 2001 Hyundai Elantra, it's the downstream O2 sensor (or the one that comes after the exhaust manifold).
1716998
The front sensor is the air fuel sensor. The rear sensor is the oxygen sensor. I installed both. Easy Job. My check engine light condition was fixed! Denso makes great parts and they fit EXACTLY
1495128
I installed denso sensor but did no work. so put back old one then work. the problem was oil pand gasket allow to release. oil into spark in burning oil into the engine cilinder. that cause to block the filter into catalytic converter. That was the problem. resume .You need new Engine or car. 180, 200,000 millas haveEngine on
2104287
Hello; On my Pontiac grand prix it was located in the side of the exhaust pipe about in the area of where the drivers seat would be located. So I would call it a downstream sensor (for my 1996 Grand Prix that is).
1678823
On my car it's on/near the rear exhaust manifold within the engine bay. The 2nd sensor is on the catalytic converter. I bought a new sensor just to be safe when I had this part installed.
1493752
there are a total of 4 oxygen sensors on that vehicle, 2 before the catalytic converter for fuel trim and 2 after that monitor catalyst efficiency. Although I believe the front and rear are different.